Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,418/900,000,000,090
- The integer number above the bar is called numerator: 779,422,863,418
- The integer number below the bar is called denominator: 900,000,000,090
- 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 = 779,422,863,418 ÷ 900,000,000,090
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:
779,422,863,418 = 2 × 389,711,431,709
779,422,863,418 is a composite number.
Written with exponents:
900,000,000,090 = 2 × 3 × 3 × 5 × 101 × 3,541 × 27,961 = 2 × 32 × 5 × 101 × 3,541 × 27,961
900,000,000,090 is a composite number.
779,422,863,418/900,000,000,090 =
(779,422,863,418 ÷ 2) / (900,000,000,090 ÷ 2) =
389,711,431,709/450,000,000,045
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.
779,422,863,418/900,000,000,090 =
(2 × 389,711,431,709)/(2 × 32 × 5 × 101 × 3,541 × 27,961) =
((2 × 389,711,431,709) ÷ 2) / ((2 × 32 × 5 × 101 × 3,541 × 27,961) ÷ 2) =
389,711,431,709/(32 × 5 × 101 × 3,541 × 27,961) =
389,711,431,709/450,000,000,045
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
389,711,431,709/450,000,000,045 =
389,711,431,709 ÷ 450,000,000,045 =
0.866025403711 ≈
0.87