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Finding the Fourth Proportional to 587,712.70, 881,569.05 and 398,755.90

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Solution

The fourth proportional to 587,712.70, 881,569.05 and 398,755.90 is: 598,133.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,712.70 : 881,569.05 = 398,755.90 : x
  2. Step 2: Convert to fraction form
    587,712.70/881,569.05 = 398,755.90/x
  3. Step 3: Cross multiply
    587,712.70x = 881,569.05 × 398,755.90
  4. Step 4: Simplify right side
    587,712.70x = 351,530,859,944.90
  5. Step 5: Solve for x
    x = 351,530,859,944.90/587,712.70
  6. Step 6: Final answer
    x = 598,133.85

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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.