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Finding the Fourth Proportional to 891,115.92, 1,337,023.98 and 392,130

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Solution

The fourth proportional to 891,115.92, 1,337,023.98 and 392,130 is: 588,349.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,115.92 : 1,337,023.98 = 392,130 : x
  2. Step 2: Convert to fraction form
    891,115.92/1,337,023.98 = 392,130/x
  3. Step 3: Cross multiply
    891,115.92x = 1,337,023.98 × 392,130
  4. Step 4: Simplify right side
    891,115.92x = 524,287,213,277.40
  5. Step 5: Solve for x
    x = 524,287,213,277.40/891,115.92
  6. Step 6: Final answer
    x = 588,349.06

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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.