Home / 658,637.20-987,372.60-434,105.20

Finding the Fourth Proportional to 658,637.20, 987,372.60 and 434,105.20

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Solution

The fourth proportional to 658,637.20, 987,372.60 and 434,105.20 is: 650,773.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,637.20 : 987,372.60 = 434,105.20 : x
  2. Step 2: Convert to fraction form
    658,637.20/987,372.60 = 434,105.20/x
  3. Step 3: Cross multiply
    658,637.20x = 987,372.60 × 434,105.20
  4. Step 4: Simplify right side
    658,637.20x = 428,623,579,997.52
  5. Step 5: Solve for x
    x = 428,623,579,997.52/658,637.20
  6. Step 6: Final answer
    x = 650,773.42

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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.