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Finding the Fourth Proportional to 493,469.40, 738,891.90 and 315,010.20

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Solution

The fourth proportional to 493,469.40, 738,891.90 and 315,010.20 is: 471,677.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,469.40 : 738,891.90 = 315,010.20 : x
  2. Step 2: Convert to fraction form
    493,469.40/738,891.90 = 315,010.20/x
  3. Step 3: Cross multiply
    493,469.40x = 738,891.90 × 315,010.20
  4. Step 4: Simplify right side
    493,469.40x = 232,758,485,197.38
  5. Step 5: Solve for x
    x = 232,758,485,197.38/493,469.40
  6. Step 6: Final answer
    x = 471,677.65

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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.