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Finding the Fourth Proportional to 488,386.40, 731,398.52 and 422,251.52

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Solution

The fourth proportional to 488,386.40, 731,398.52 and 422,251.52 is: 632,356.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,386.40 : 731,398.52 = 422,251.52 : x
  2. Step 2: Convert to fraction form
    488,386.40/731,398.52 = 422,251.52/x
  3. Step 3: Cross multiply
    488,386.40x = 731,398.52 × 422,251.52
  4. Step 4: Simplify right side
    488,386.40x = 308,834,136,795.75
  5. Step 5: Solve for x
    x = 308,834,136,795.75/488,386.40
  6. Step 6: Final answer
    x = 632,356.14

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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.