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Finding the Fourth Proportional to 422,496.20, 633,744.30 and 394,502.60

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Solution

The fourth proportional to 422,496.20, 633,744.30 and 394,502.60 is: 591,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,496.20 : 633,744.30 = 394,502.60 : x
  2. Step 2: Convert to fraction form
    422,496.20/633,744.30 = 394,502.60/x
  3. Step 3: Cross multiply
    422,496.20x = 633,744.30 × 394,502.60
  4. Step 4: Simplify right side
    422,496.20x = 250,013,774,085.18
  5. Step 5: Solve for x
    x = 250,013,774,085.18/422,496.20
  6. Step 6: Final answer
    x = 591,753.90

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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.