GCF of 638/490, 620/655
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 638/490, 620/655 i.e 2/64190 easily. The following is the detailed procedure to determine the greatest common factor of fractions 638/490, 620/655.
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 638/490,620/655?
Given fractions are 638/490,620/655
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 638/490,620/655, numerators are 638,620
Denominators are 490,655
The GCF of 638,620 is 2 .
LCM of 490,655 is 64190.
The greatest common factor of 638/490,620/655 = [GCF of 638,620]/[LCM of 490,655]= 2/64190
Therefore, the GCF of 638/490,620/655 is 2/64190.
To find the highest common factor of 638,620, we have to find the factors of both numbers and list the highest common factor.
The factors of 638 are 1, 2, 11, 22, 29, 58, 319, 638
The factors of 620 are 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
The HCF of 638,620 is 2.
Lets's calculate GCF of 638,620
| 2 | 638, 620 |
| 319, 310 |
∴ So the GCF of the given numbers is 2 = 2
Greatest Common Factor of 638,620 By Matching Biggest Common Factor Method
Now, list down the factors of 638
:1,2,11,22,29,58,319,638
Now, list down the factors of 620
:1,2,4,5,10,20,31,62,124,155,310,620
Greatest Common Factor
We found the factors 638,620 . The biggest common factor number is the GCF number.
So the greatest common factor 638,620 is 2.
Lets's calculate LCM of 490,655
| 5 | 490, 655 |
| 98, 131 |
∴ So the LCM of the given numbers is 5 x 98 x 131 = 64190
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 2/64190
Therefore, the GCF of Fractions 638/490,620/655 is 2/64190
Least Common Multiple of 490,655 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 490,655 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(490,655) = 5
common factors(in case of two or more numbers have common factors) = 1
GCF(490,655) x common factors =5 x 1 = 5
LCM(490,655) = ( 490 × 655 ) / 5
LCM(490,655) = 320950 / 5
LCM(490,655) = 64190
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FAQs on GCF of Fractions of 638/490, 620/655
1. What is the HCF of 638,620?
The HCF of 638,620 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 638/490, 620/655?
Answer: GCF of Numerators as per given numbers 638/490, 620/655 is
GCF of Numerators i.e. for 638,620 is 2
LCM of denominators i.e. for 490,655 is 64190.
Thus, GCF of Fractions is 2/64190.Finally, GCF of Fractions for 638/490, 620/655 is 2/64190.