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Finding the Fourth Proportional to 615,960.72, 923,780.70 and 260,791.92

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Solution

The fourth proportional to 615,960.72, 923,780.70 and 260,791.92 is: 391,119.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,960.72 : 923,780.70 = 260,791.92 : x
  2. Step 2: Convert to fraction form
    615,960.72/923,780.70 = 260,791.92/x
  3. Step 3: Cross multiply
    615,960.72x = 923,780.70 × 260,791.92
  4. Step 4: Simplify right side
    615,960.72x = 240,914,542,411.94
  5. Step 5: Solve for x
    x = 240,914,542,411.94/615,960.72
  6. Step 6: Final answer
    x = 391,119.98

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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.