GCF of 28/48, 70/49, 391/860
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 28/48, 70/49, 391/860 i.e 1/505680 easily. The following is the detailed procedure to determine the greatest common factor of fractions 28/48, 70/49, 391/860.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
What is the GCF of 28/48,70/49,391/860?
Given fractions are 28/48,70/49,391/860
To find the GCF of fractions, we have to find the GCF of numerator numbers and LCM of denominator numbers. Its formula is given by
GCF of Fraction = Greatest Common Factor of Numerator/Least Common Multiple of Denominators
In the fractions 28/48,70/49,391/860, numerators are 28,70,391
Denominators are 48,49,860
The GCF of 28,70,391 is 1 .
LCM of 48,49,860 is 505680.
The greatest common factor of 28/48,70/49,391/860 = [GCF of 28,70,391]/[LCM of 48,49,860]= 1/505680
Therefore, the GCF of 28/48,70/49,391/860 is 1/505680.
To find the highest common factor of 28,70,391, we have to find the factors of both numbers and list the highest common factor.
The factors of 28 are 1, 2, 4, 7, 14, 28
The factors of 70 are 1, 2, 5, 7, 10, 14, 35, 70
The factors of 391 are 1, 17, 23, 391
The HCF of 28,70,391 is 1.
Lets's calculate GCF of 28,70,391
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 28,70,391 By Matching Biggest Common Factor Method
Now, list down the factors of 28
:1,2,4,7,14,28
Now, list down the factors of 70
:1,2,5,7,10,14,35,70
Now, list down the factors of 391
:1,17,23,391
Greatest Common Factor
We found the factors 28,70,391 . The biggest common factor number is the GCF number.
So the greatest common factor 28,70,391 is 1.
Lets's calculate LCM of 48,49,860
| 2 | 48, 49, 860 |
| 2 | 24, 49, 430 |
| 12, 49, 215 |
∴ So the LCM of the given numbers is 2 x 2 x 12 x 49 x 215 = 505680
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/505680
Therefore, the GCF of Fractions 28/48,70/49,391/860 is 1/505680
Least Common Multiple of 48,49,860 with GCF Formula
The formula of LCM is LCM(a1,a2,a3....,an) = ( a1 × a2 × a3 × .... × an) / GCF(a1,a2,a3....,an) x common factors(if more than 2 numbers have common factors).
We need to calculate greatest common factor of 48,49,860 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(48,49,860) = 1
common factors(in case of two or more numbers have common factors) = 4
GCF(48,49,860) x common factors =1 x 4 = 4
LCM(48,49,860) = ( 48 × 49 × 860 ) / 4
LCM(48,49,860) = 2022720 / 4
LCM(48,49,860) = 505680
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FAQs on GCF of Fractions of 28/48, 70/49, 391/860
1. What is the HCF of 28,70,391?
The HCF of 28,70,391 is 1
2. What is the GCF of a fraction?
The GCF of a fraction is defined as the greatest fraction that divides exactly into 2 or more fractions.
3. How to find GCF in Fractions?
Answer: GCF of fractions can be found using the simple formula GCF of Fractions = GCF of Numerators/LCM of Denominators.
4. What is the GCF of Fractions for 28/48, 70/49, 391/860?
Answer: GCF of Numerators as per given numbers 28/48, 70/49, 391/860 is
GCF of Numerators i.e. for 28,70,391 is 1
LCM of denominators i.e. for 48,49,860 is 505680.
Thus, GCF of Fractions is 1/505680.Finally, GCF of Fractions for 28/48, 70/49, 391/860 is 1/505680.