GCF of 398/25, 490/385
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 398/25, 490/385 i.e 2/1925 easily. The following is the detailed procedure to determine the greatest common factor of fractions 398/25, 490/385.
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 398/25,490/385?
Given fractions are 398/25,490/385
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 398/25,490/385, numerators are 398,490
Denominators are 25,385
The GCF of 398,490 is 2 .
LCM of 25,385 is 1925.
The greatest common factor of 398/25,490/385 = [GCF of 398,490]/[LCM of 25,385]= 2/1925
Therefore, the GCF of 398/25,490/385 is 2/1925.
To find the highest common factor of 398,490, we have to find the factors of both numbers and list the highest common factor.
The factors of 398 are 1, 2, 199, 398
The factors of 490 are 1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490
The HCF of 398,490 is 2.
Lets's calculate GCF of 398,490
| 2 | 398, 490 |
| 199, 245 |
∴ So the GCF of the given numbers is 2 = 2
Greatest Common Factor of 398,490 By Matching Biggest Common Factor Method
Now, list down the factors of 398
:1,2,199,398
Now, list down the factors of 490
:1,2,5,7,10,14,35,49,70,98,245,490
Greatest Common Factor
We found the factors 398,490 . The biggest common factor number is the GCF number.
So the greatest common factor 398,490 is 2.
Lets's calculate LCM of 25,385
| 5 | 25, 385 |
| 5, 77 |
∴ So the LCM of the given numbers is 5 x 5 x 77 = 1925
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 2/1925
Therefore, the GCF of Fractions 398/25,490/385 is 2/1925
Least Common Multiple of 25,385 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 25,385 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(25,385) = 5
common factors(in case of two or more numbers have common factors) = 1
GCF(25,385) x common factors =5 x 1 = 5
LCM(25,385) = ( 25 × 385 ) / 5
LCM(25,385) = 9625 / 5
LCM(25,385) = 1925
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FAQs on GCF of Fractions of 398/25, 490/385
1. What is the HCF of 398,490?
The HCF of 398,490 is 2
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 398/25, 490/385?
Answer: GCF of Numerators as per given numbers 398/25, 490/385 is
GCF of Numerators i.e. for 398,490 is 2
LCM of denominators i.e. for 25,385 is 1925.
Thus, GCF of Fractions is 2/1925.Finally, GCF of Fractions for 398/25, 490/385 is 2/1925.