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Finding the Fourth Proportional to 598,712.20, 898,068.30 and 521,729.80

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Solution

The fourth proportional to 598,712.20, 898,068.30 and 521,729.80 is: 782,594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,712.20 : 898,068.30 = 521,729.80 : x
  2. Step 2: Convert to fraction form
    598,712.20/898,068.30 = 521,729.80/x
  3. Step 3: Cross multiply
    598,712.20x = 898,068.30 × 521,729.80
  4. Step 4: Simplify right side
    598,712.20x = 468,548,994,545.34
  5. Step 5: Solve for x
    x = 468,548,994,545.34/598,712.20
  6. Step 6: Final answer
    x = 782,594.70

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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.