Finding the Fourth Proportional to 387,198,909.89, 580,797,638.97 and 121,324,976.96
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Solution
The fourth proportional to 387,198,909.89, 580,797,638.97 and 121,324,976.96 is: 181,987,237.99
Step by Step Solution
- Step 1: Write the proportion equation
387,198,909.89 : 580,797,638.97 = 121,324,976.96 : x - Step 2: Convert to fraction form
387,198,909.89/580,797,638.97 = 121,324,976.96/x - Step 3: Cross multiply
387,198,909.89x = 580,797,638.97 × 121,324,976.96 - Step 4: Simplify right side
387,198,909.89x = 70,465,260,163,098,680 - Step 5: Solve for x
x = 70,465,260,163,098,680/387,198,909.89 - Step 6: Final answer
x = 181,987,237.99
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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.