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Finding the Fourth Proportional to 418,357.26, 627,469.83 and 347,733.54

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Solution

The fourth proportional to 418,357.26, 627,469.83 and 347,733.54 is: 521,545.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,357.26 : 627,469.83 = 347,733.54 : x
  2. Step 2: Convert to fraction form
    418,357.26/627,469.83 = 347,733.54/x
  3. Step 3: Cross multiply
    418,357.26x = 627,469.83 × 347,733.54
  4. Step 4: Simplify right side
    418,357.26x = 218,192,305,229.10
  5. Step 5: Solve for x
    x = 218,192,305,229.10/418,357.26
  6. Step 6: Final answer
    x = 521,545.40

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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.