Home / 1,129,144.15-1,557,839.44-721,484.62

Finding the Fourth Proportional to 1,129,144.15, 1,557,839.44 and 721,484.62

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Solution

The fourth proportional to 1,129,144.15, 1,557,839.44 and 721,484.62 is: 995,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,144.15 : 1,557,839.44 = 721,484.62 : x
  2. Step 2: Convert to fraction form
    1,129,144.15/1,557,839.44 = 721,484.62/x
  3. Step 3: Cross multiply
    1,129,144.15x = 1,557,839.44 × 721,484.62
  4. Step 4: Simplify right side
    1,129,144.15x = 1,123,957,189,338.32
  5. Step 5: Solve for x
    x = 1,123,957,189,338.32/1,129,144.15
  6. Step 6: Final answer
    x = 995,406.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.