Use our free GCF of Fractions Calculator tool to compute the GCF of 400/920, 781/992 i.e 1/114080 easily. The following is the detailed procedure to determine the greatest common factor of fractions 400/920, 781/992.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 400/920,781/992
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 400/920,781/992, numerators are 400,781
Denominators are 920,992
The GCF of 400,781 is 1 .
LCM of 920,992 is 114080.
The greatest common factor of 400/920,781/992 = [GCF of 400,781]/[LCM of 920,992]= 1/114080
Therefore, the GCF of 400/920,781/992 is 1/114080.
To find the highest common factor of 400,781, we have to find the factors of both numbers and list the highest common factor.
The factors of 400 are 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400
The factors of 781 are 1, 11, 71, 781
The HCF of 400,781 is 1.
Lets's calculate GCF of 400,781
∴ So GCF of numbers is 1 because of no common factors present between them.
Now, list down the factors of 400
:1,2,4,5,8,10,16,20,25,40,50,80,100,200,400
Now, list down the factors of 781
:1,11,71,781
Greatest Common Factor
We found the factors 400,781 . The biggest common factor number is the GCF number.
So the greatest common factor 400,781 is 1.
Lets's calculate LCM of 920,992
2 | 920, 992 |
2 | 460, 496 |
2 | 230, 248 |
115, 124 |
∴ So the LCM of the given numbers is 2 x 2 x 2 x 115 x 124 = 114080
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/114080
Therefore, the GCF of Fractions 400/920,781/992 is 1/114080
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 920,992 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(920,992) = 8
common factors(in case of two or more numbers have common factors) = 1
GCF(920,992) x common factors =8 x 1 = 8
LCM(920,992) = ( 920 × 992 ) / 8
LCM(920,992) = 912640 / 8
LCM(920,992) = 114080
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 400,781?
The HCF of 400,781 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 400/920, 781/992?
Answer: GCF of Numerators as per given numbers 400/920, 781/992 is
GCF of Numerators i.e. for 400,781 is 1
LCM of denominators i.e. for 920,992 is 114080.
Thus, GCF of Fractions is 1/114080.Finally, GCF of Fractions for 400/920, 781/992 is 1/114080.