Home / 1,204,755.12-1,662,438.87-721,307.70

Finding the Fourth Proportional to 1,204,755.12, 1,662,438.87 and 721,307.70

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Solution

The fourth proportional to 1,204,755.12, 1,662,438.87 and 721,307.70 is: 995,330.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204,755.12 : 1,662,438.87 = 721,307.70 : x
  2. Step 2: Convert to fraction form
    1,204,755.12/1,662,438.87 = 721,307.70/x
  3. Step 3: Cross multiply
    1,204,755.12x = 1,662,438.87 × 721,307.70
  4. Step 4: Simplify right side
    1,204,755.12x = 1,199,129,957,710.30
  5. Step 5: Solve for x
    x = 1,199,129,957,710.30/1,204,755.12
  6. Step 6: Final answer
    x = 995,330.87

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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.