Use our free GCF of Fractions Calculator tool to compute the GCF of 390/938, 256/771 i.e 2/723198 easily. The following is the detailed procedure to determine the greatest common factor of fractions 390/938, 256/771.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 390/938,256/771
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 390/938,256/771, numerators are 390,256
Denominators are 938,771
The GCF of 390,256 is 2 .
LCM of 938,771 is 723198.
The greatest common factor of 390/938,256/771 = [GCF of 390,256]/[LCM of 938,771]= 2/723198
Therefore, the GCF of 390/938,256/771 is 2/723198.
To find the highest common factor of 390,256, we have to find the factors of both numbers and list the highest common factor.
The factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
The factors of 256 are 1, 2, 4, 8, 16, 32, 64, 128, 256
The HCF of 390,256 is 2.
Lets's calculate GCF of 390,256
2 | 390, 256 |
195, 128 |
∴ So the GCF of the given numbers is 2 = 2
Now, list down the factors of 390
:1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390
Now, list down the factors of 256
:1,2,4,8,16,32,64,128,256
Greatest Common Factor
We found the factors 390,256 . The biggest common factor number is the GCF number.
So the greatest common factor 390,256 is 2.
Lets's calculate LCM of 938,771
Given numbers has no common factors except 1. So, there LCM is their product i.e 723198
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 2/723198
Therefore, the GCF of Fractions 390/938,256/771 is 2/723198
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 938,771 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(938,771) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(938,771) x common factors =1 x 1 = 1
LCM(938,771) = ( 938 × 771 ) / 1
LCM(938,771) = 723198 / 1
LCM(938,771) = 723198
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 390,256?
The HCF of 390,256 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 390/938, 256/771?
Answer: GCF of Numerators as per given numbers 390/938, 256/771 is
GCF of Numerators i.e. for 390,256 is 2
LCM of denominators i.e. for 938,771 is 723198.
Thus, GCF of Fractions is 2/723198.Finally, GCF of Fractions for 390/938, 256/771 is 2/723198.