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Finding the Fourth Proportional to 618,086.70, 925,468.96 and 392,224.28

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Solution

The fourth proportional to 618,086.70, 925,468.96 and 392,224.28 is: 587,282.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,086.70 : 925,468.96 = 392,224.28 : x
  2. Step 2: Convert to fraction form
    618,086.70/925,468.96 = 392,224.28/x
  3. Step 3: Cross multiply
    618,086.70x = 925,468.96 × 392,224.28
  4. Step 4: Simplify right side
    618,086.70x = 362,991,396,498.35
  5. Step 5: Solve for x
    x = 362,991,396,498.35/618,086.70
  6. Step 6: Final answer
    x = 587,282.33

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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.