Home / 478,721.12-718,079.49-123,704.96

Finding the Fourth Proportional to 478,721.12, 718,079.49 and 123,704.96

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Solution

The fourth proportional to 478,721.12, 718,079.49 and 123,704.96 is: 185,556.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,721.12 : 718,079.49 = 123,704.96 : x
  2. Step 2: Convert to fraction form
    478,721.12/718,079.49 = 123,704.96/x
  3. Step 3: Cross multiply
    478,721.12x = 718,079.49 × 123,704.96
  4. Step 4: Simplify right side
    478,721.12x = 88,829,994,587.27
  5. Step 5: Solve for x
    x = 88,829,994,587.27/478,721.12
  6. Step 6: Final answer
    x = 185,556.87

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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.