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Finding the Fourth Proportional to 543,729.60, 813,981.60 and 404,107.20

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Solution

The fourth proportional to 543,729.60, 813,981.60 and 404,107.20 is: 604,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,729.60 : 813,981.60 = 404,107.20 : x
  2. Step 2: Convert to fraction form
    543,729.60/813,981.60 = 404,107.20/x
  3. Step 3: Cross multiply
    543,729.60x = 813,981.60 × 404,107.20
  4. Step 4: Simplify right side
    543,729.60x = 328,935,825,227.52
  5. Step 5: Solve for x
    x = 328,935,825,227.52/543,729.60
  6. Step 6: Final answer
    x = 604,962.15

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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.