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Finding the Fourth Proportional to 418,354.26, 627,465.33 and 347,730.54

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Solution

The fourth proportional to 418,354.26, 627,465.33 and 347,730.54 is: 521,540.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,354.26 : 627,465.33 = 347,730.54 : x
  2. Step 2: Convert to fraction form
    418,354.26/627,465.33 = 347,730.54/x
  3. Step 3: Cross multiply
    418,354.26x = 627,465.33 × 347,730.54
  4. Step 4: Simplify right side
    418,354.26x = 218,188,858,032.18
  5. Step 5: Solve for x
    x = 218,188,858,032.18/418,354.26
  6. Step 6: Final answer
    x = 521,540.90

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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.