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Finding the Fourth Proportional to 489,472.43, 676,160.12 and 377,731.31

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Solution

The fourth proportional to 489,472.43, 676,160.12 and 377,731.31 is: 521,800.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,472.43 : 676,160.12 = 377,731.31 : x
  2. Step 2: Convert to fraction form
    489,472.43/676,160.12 = 377,731.31/x
  3. Step 3: Cross multiply
    489,472.43x = 676,160.12 × 377,731.31
  4. Step 4: Simplify right side
    489,472.43x = 255,406,845,460.89
  5. Step 5: Solve for x
    x = 255,406,845,460.89/489,472.43
  6. Step 6: Final answer
    x = 521,800.27

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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.