Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,436/900,000,000,109
- The integer number above the bar is called numerator: 779,422,863,436
- The integer number below the bar is called denominator: 900,000,000,109
- 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 = 779,422,863,436 ÷ 900,000,000,109
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:
779,422,863,436 = 2 × 2 × 7 × 373 × 5,273 × 14,153 = 22 × 7 × 373 × 5,273 × 14,153
779,422,863,436 is a composite number.
Written with exponents:
900,000,000,109 = 7 × 7 × 17 × 373 × 2,896,601 = 72 × 17 × 373 × 2,896,601
900,000,000,109 is a composite number.
779,422,863,436/900,000,000,109 =
(779,422,863,436 ÷ 2,611) / (900,000,000,109 ÷ 2,611) =
298,515,076/344,695,519
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.
779,422,863,436/900,000,000,109 =
(22 × 7 × 373 × 5,273 × 14,153)/(72 × 17 × 373 × 2,896,601) =
((22 × 7 × 373 × 5,273 × 14,153) ÷ (7 × 373)) / ((72 × 17 × 373 × 2,896,601) ÷ (7 × 373)) =
(22 × 5,273 × 14,153)/(7 × 17 × 2,896,601) =
298,515,076/344,695,519
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
298,515,076/344,695,519 =
298,515,076 ÷ 344,695,519 =
0.866025403713 ≈
0.87