Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,412/900,000,000,084
- The integer number above the bar is called numerator: 779,422,863,412
- The integer number below the bar is called denominator: 900,000,000,084
- 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 = 779,422,863,412 ÷ 900,000,000,084
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:
779,422,863,412 = 2 × 2 × 194,855,715,853 = 22 × 194,855,715,853
779,422,863,412 is a composite number.
Written with exponents:
900,000,000,084 = 2 × 2 × 3 × 47 × 211 × 7,562,771 = 22 × 3 × 47 × 211 × 7,562,771
900,000,000,084 is a composite number.
779,422,863,412/900,000,000,084 =
(779,422,863,412 ÷ 4) / (900,000,000,084 ÷ 4) =
194,855,715,853/225,000,000,021
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.
779,422,863,412/900,000,000,084 =
(22 × 194,855,715,853)/(22 × 3 × 47 × 211 × 7,562,771) =
((22 × 194,855,715,853) ÷ 22) / ((22 × 3 × 47 × 211 × 7,562,771) ÷ 22) =
194,855,715,853/(3 × 47 × 211 × 7,562,771) =
194,855,715,853/225,000,000,021
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
194,855,715,853/225,000,000,021 =
194,855,715,853 ÷ 225,000,000,021 =
0.86602540371 ≈
0.87