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Finding the Fourth Proportional to 422,521.92, 634,372.56 and 403,230.96

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Solution

The fourth proportional to 422,521.92, 634,372.56 and 403,230.96 is: 605,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,521.92 : 634,372.56 = 403,230.96 : x
  2. Step 2: Convert to fraction form
    422,521.92/634,372.56 = 403,230.96/x
  3. Step 3: Cross multiply
    422,521.92x = 634,372.56 × 403,230.96
  4. Step 4: Simplify right side
    422,521.92x = 255,798,656,366.46
  5. Step 5: Solve for x
    x = 255,798,656,366.46/422,521.92
  6. Step 6: Final answer
    x = 605,409.20

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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.