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Finding the Fourth Proportional to 543,950.78, 747,990.15 and 472,205.30

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Solution

The fourth proportional to 543,950.78, 747,990.15 and 472,205.30 is: 649,332.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,950.78 : 747,990.15 = 472,205.30 : x
  2. Step 2: Convert to fraction form
    543,950.78/747,990.15 = 472,205.30/x
  3. Step 3: Cross multiply
    543,950.78x = 747,990.15 × 472,205.30
  4. Step 4: Simplify right side
    543,950.78x = 353,204,913,177.80
  5. Step 5: Solve for x
    x = 353,204,913,177.80/543,950.78
  6. Step 6: Final answer
    x = 649,332.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.