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Finding the Fourth Proportional to 418,355.01, 627,466.46 and 347,731.29

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Solution

The fourth proportional to 418,355.01, 627,466.46 and 347,731.29 is: 521,542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,355.01 : 627,466.46 = 347,731.29 : x
  2. Step 2: Convert to fraction form
    418,355.01/627,466.46 = 347,731.29/x
  3. Step 3: Cross multiply
    418,355.01x = 627,466.46 × 347,731.29
  4. Step 4: Simplify right side
    418,355.01x = 218,189,719,828.88
  5. Step 5: Solve for x
    x = 218,189,719,828.88/418,355.01
  6. Step 6: Final answer
    x = 521,542.03

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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.