Home / 422,821.30-634,337.79-123,301.92

Finding the Fourth Proportional to 422,821.30, 634,337.79 and 123,301.92

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Solution

The fourth proportional to 422,821.30, 634,337.79 and 123,301.92 is: 184,983.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,821.30 : 634,337.79 = 123,301.92 : x
  2. Step 2: Convert to fraction form
    422,821.30/634,337.79 = 123,301.92/x
  3. Step 3: Cross multiply
    422,821.30x = 634,337.79 × 123,301.92
  4. Step 4: Simplify right side
    422,821.30x = 78,215,067,435.56
  5. Step 5: Solve for x
    x = 78,215,067,435.56/422,821.30
  6. Step 6: Final answer
    x = 184,983.74

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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.