Home / 478,729.12-718,091.52-123,712.96

Finding the Fourth Proportional to 478,729.12, 718,091.52 and 123,712.96

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Solution

The fourth proportional to 478,729.12, 718,091.52 and 123,712.96 is: 185,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,729.12 : 718,091.52 = 123,712.96 : x
  2. Step 2: Convert to fraction form
    478,729.12/718,091.52 = 123,712.96/x
  3. Step 3: Cross multiply
    478,729.12x = 718,091.52 × 123,712.96
  4. Step 4: Simplify right side
    478,729.12x = 88,837,227,490.10
  5. Step 5: Solve for x
    x = 88,837,227,490.10/478,729.12
  6. Step 6: Final answer
    x = 185,568.88

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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.