Home / 1,129,145.66-1,557,841.50-721,486.13

Finding the Fourth Proportional to 1,129,145.66, 1,557,841.50 and 721,486.13

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Solution

The fourth proportional to 1,129,145.66, 1,557,841.50 and 721,486.13 is: 995,408.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,145.66 : 1,557,841.50 = 721,486.13 : x
  2. Step 2: Convert to fraction form
    1,129,145.66/1,557,841.50 = 721,486.13/x
  3. Step 3: Cross multiply
    1,129,145.66x = 1,557,841.50 × 721,486.13
  4. Step 4: Simplify right side
    1,129,145.66x = 1,123,961,027,199.19
  5. Step 5: Solve for x
    x = 1,123,961,027,199.19/1,129,145.66
  6. Step 6: Final answer
    x = 995,408.36

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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.