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Finding the Fourth Proportional to 837,171, 1,255,757.76 and 387,646.92

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Solution

The fourth proportional to 837,171, 1,255,757.76 and 387,646.92 is: 581,470.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,171 : 1,255,757.76 = 387,646.92 : x
  2. Step 2: Convert to fraction form
    837,171/1,255,757.76 = 387,646.92/x
  3. Step 3: Cross multiply
    837,171x = 1,255,757.76 × 387,646.92
  4. Step 4: Simplify right side
    837,171x = 486,790,627,930.10
  5. Step 5: Solve for x
    x = 486,790,627,930.10/837,171
  6. Step 6: Final answer
    x = 581,470.96

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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.