Finding the Fourth Proportional to 515,564,581.86, 711,539,706.60 and 289,540,711.08
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Solution
The fourth proportional to 515,564,581.86, 711,539,706.60 and 289,540,711.08 is: 399,600,205.02
Step by Step Solution
- Step 1: Write the proportion equation
515,564,581.86 : 711,539,706.60 = 289,540,711.08 : x - Step 2: Convert to fraction form
515,564,581.86/711,539,706.60 = 289,540,711.08/x - Step 3: Cross multiply
515,564,581.86x = 711,539,706.60 × 289,540,711.08 - Step 4: Simplify right side
515,564,581.86x = 206,019,712,610,618,560 - Step 5: Solve for x
x = 206,019,712,610,618,560/515,564,581.86 - Step 6: Final answer
x = 399,600,205.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.