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Finding the Fourth Proportional to 863,755.18, 1,294,414.88 and 407,860

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Solution

The fourth proportional to 863,755.18, 1,294,414.88 and 407,860 is: 611,214.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,755.18 : 1,294,414.88 = 407,860 : x
  2. Step 2: Convert to fraction form
    863,755.18/1,294,414.88 = 407,860/x
  3. Step 3: Cross multiply
    863,755.18x = 1,294,414.88 × 407,860
  4. Step 4: Simplify right side
    863,755.18x = 527,940,052,956.80
  5. Step 5: Solve for x
    x = 527,940,052,956.80/863,755.18
  6. Step 6: Final answer
    x = 611,214.92

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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.