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Finding the Fourth Proportional to 418,358.26, 627,471.33 and 347,734.54

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Solution

The fourth proportional to 418,358.26, 627,471.33 and 347,734.54 is: 521,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,358.26 : 627,471.33 = 347,734.54 : x
  2. Step 2: Convert to fraction form
    418,358.26/627,471.33 = 347,734.54/x
  3. Step 3: Cross multiply
    418,358.26x = 627,471.33 × 347,734.54
  4. Step 4: Simplify right side
    418,358.26x = 218,193,454,300.74
  5. Step 5: Solve for x
    x = 218,193,454,300.74/418,358.26
  6. Step 6: Final answer
    x = 521,546.90

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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.