Use our free GCF of Fractions Calculator tool to compute the GCF of 644/605, 940/643 i.e 4/389015 easily. The following is the detailed procedure to determine the greatest common factor of fractions 644/605, 940/643.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 644/605,940/643
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 644/605,940/643, numerators are 644,940
Denominators are 605,643
The GCF of 644,940 is 4 .
LCM of 605,643 is 389015.
The greatest common factor of 644/605,940/643 = [GCF of 644,940]/[LCM of 605,643]= 4/389015
Therefore, the GCF of 644/605,940/643 is 4/389015.
To find the highest common factor of 644,940, we have to find the factors of both numbers and list the highest common factor.
The factors of 644 are 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
The factors of 940 are 1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940
The HCF of 644,940 is 4.
Lets's calculate GCF of 644,940
2 | 644, 940 |
2 | 322, 470 |
161, 235 |
∴ So the GCF of the given numbers is 2 x 2 = 4
Now, list down the factors of 644
:1,2,4,7,14,23,28,46,92,161,322,644
Now, list down the factors of 940
:1,2,4,5,10,20,47,94,188,235,470,940
Greatest Common Factor
We found the factors 644,940 . The biggest common factor number is the GCF number.
So the greatest common factor 644,940 is 4.
Lets's calculate LCM of 605,643
Given numbers has no common factors except 1. So, there LCM is their product i.e 389015
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 4/389015
Therefore, the GCF of Fractions 644/605,940/643 is 4/389015
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 605,643 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(605,643) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(605,643) x common factors =1 x 1 = 1
LCM(605,643) = ( 605 × 643 ) / 1
LCM(605,643) = 389015 / 1
LCM(605,643) = 389015
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 644,940?
The HCF of 644,940 is 4
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 644/605, 940/643?
Answer: GCF of Numerators as per given numbers 644/605, 940/643 is
GCF of Numerators i.e. for 644,940 is 4
LCM of denominators i.e. for 605,643 is 389015.
Thus, GCF of Fractions is 4/389015.Finally, GCF of Fractions for 644/605, 940/643 is 4/389015.