Home / 815,134.80-1,222,920.90-726,998.70

Finding the Fourth Proportional to 815,134.80, 1,222,920.90 and 726,998.70

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Solution

The fourth proportional to 815,134.80, 1,222,920.90 and 726,998.70 is: 1,090,693.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,134.80 : 1,222,920.90 = 726,998.70 : x
  2. Step 2: Convert to fraction form
    815,134.80/1,222,920.90 = 726,998.70/x
  3. Step 3: Cross multiply
    815,134.80x = 1,222,920.90 × 726,998.70
  4. Step 4: Simplify right side
    815,134.80x = 889,061,904,502.83
  5. Step 5: Solve for x
    x = 889,061,904,502.83/815,134.80
  6. Step 6: Final answer
    x = 1,090,693.10

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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.