Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,434/900,000,000,064
- The integer number above the bar is called numerator: 779,422,863,434
- The integer number below the bar is called denominator: 900,000,000,064
- 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 = 779,422,863,434 ÷ 900,000,000,064
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:
779,422,863,434 = 2 × 31 × 12,571,336,507
779,422,863,434 is a composite number.
Written with exponents:
900,000,000,064 = 2 × 2 × 2 × 2 × 2 × 2 × 11 × 19 × 67,284,689 = 26 × 11 × 19 × 67,284,689
900,000,000,064 is a composite number.
779,422,863,434/900,000,000,064 =
(779,422,863,434 ÷ 2) / (900,000,000,064 ÷ 2) =
389,711,431,717/450,000,000,032
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.
779,422,863,434/900,000,000,064 =
(2 × 31 × 12,571,336,507)/(26 × 11 × 19 × 67,284,689) =
((2 × 31 × 12,571,336,507) ÷ 2) / ((26 × 11 × 19 × 67,284,689) ÷ 2) =
(31 × 12,571,336,507)/(25 × 11 × 19 × 67,284,689) =
389,711,431,717/450,000,000,032
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
389,711,431,717/450,000,000,032 =
389,711,431,717 ÷ 450,000,000,032 =
0.866025403754 ≈
0.87