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Finding the Fourth Proportional to 891,108.92, 1,337,013.30 and 392,123

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Solution

The fourth proportional to 891,108.92, 1,337,013.30 and 392,123 is: 588,338.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,108.92 : 1,337,013.30 = 392,123 : x
  2. Step 2: Convert to fraction form
    891,108.92/1,337,013.30 = 392,123/x
  3. Step 3: Cross multiply
    891,108.92x = 1,337,013.30 × 392,123
  4. Step 4: Simplify right side
    891,108.92x = 524,273,666,235.90
  5. Step 5: Solve for x
    x = 524,273,666,235.90/891,108.92
  6. Step 6: Final answer
    x = 588,338.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.