Finding the Fourth Proportional to 1,991,613,163.59, 2,987,378,721.37 and 663,737,634.08
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Solution
The fourth proportional to 1,991,613,163.59, 2,987,378,721.37 and 663,737,634.08 is: 995,592,779.20
Step by Step Solution
- Step 1: Write the proportion equation
1,991,613,163.59 : 2,987,378,721.37 = 663,737,634.08 : x - Step 2: Convert to fraction form
1,991,613,163.59/2,987,378,721.37 = 663,737,634.08/x - Step 3: Cross multiply
1,991,613,163.59x = 2,987,378,721.37 × 663,737,634.08 - Step 4: Simplify right side
1,991,613,163.59x = 1,982,835,684,633,200,128 - Step 5: Solve for x
x = 1,982,835,684,633,200,128/1,991,613,163.59 - Step 6: Final answer
x = 995,592,779.20
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.