Finding the Fourth Proportional to 515,564,570.86, 711,539,691.42 and 289,540,700.08
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Solution
The fourth proportional to 515,564,570.86, 711,539,691.42 and 289,540,700.08 is: 399,600,189.84
Step by Step Solution
- Step 1: Write the proportion equation
515,564,570.86 : 711,539,691.42 = 289,540,700.08 : x - Step 2: Convert to fraction form
515,564,570.86/711,539,691.42 = 289,540,700.08/x - Step 3: Cross multiply
515,564,570.86x = 711,539,691.42 × 289,540,700.08 - Step 4: Simplify right side
515,564,570.86x = 206,019,700,388,453,952 - Step 5: Solve for x
x = 206,019,700,388,453,952/515,564,570.86 - Step 6: Final answer
x = 399,600,189.84
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.