Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
1,107,692,320/3,599,999,995
- The integer number above the bar is called numerator: 1,107,692,320
- The integer number below the bar is called denominator: 3,599,999,995
- The fraction bar means that the numerator is divided by the denominator.
- To get the fraction's value divide the numerator by the denominator:
The value = 1,107,692,320 ÷ 3,599,999,995
To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
Written with exponents:
1,107,692,320 = 2 × 2 × 2 × 2 × 2 × 5 × 7 × 989,011 = 25 × 5 × 7 × 989,011
1,107,692,320 is a composite number.
3,599,999,995 = 5 × 719,999,999
3,599,999,995 is a composite number.
1,107,692,320/3,599,999,995 =
(1,107,692,320 ÷ 5) / (3,599,999,995 ÷ 5) =
221,538,464/719,999,999
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
1,107,692,320/3,599,999,995 =
(25 × 5 × 7 × 989,011)/(5 × 719,999,999) =
((25 × 5 × 7 × 989,011) ÷ 5) / ((5 × 719,999,999) ÷ 5) =
(25 × 7 × 989,011)/719,999,999 =
221,538,464/719,999,999
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
221,538,464/719,999,999 =
221,538,464 ÷ 719,999,999 =
0.307692311538 ≈
0.31