Finding the Fourth Proportional to 479,745,793.79, 661,988,335.55 and 281,434,930.98
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Solution
The fourth proportional to 479,745,793.79, 661,988,335.55 and 281,434,930.98 is: 388,344,502.31
Step by Step Solution
- Step 1: Write the proportion equation
479,745,793.79 : 661,988,335.55 = 281,434,930.98 : x - Step 2: Convert to fraction form
479,745,793.79/661,988,335.55 = 281,434,930.98/x - Step 3: Cross multiply
479,745,793.79x = 661,988,335.55 × 281,434,930.98 - Step 4: Simplify right side
479,745,793.79x = 186,306,641,523,672,160 - Step 5: Solve for x
x = 186,306,641,523,672,160/479,745,793.79 - Step 6: Final answer
x = 388,344,502.31
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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.