Home / 1,204,513.76-1,662,367.87-721,078.78

Finding the Fourth Proportional to 1,204,513.76, 1,662,367.87 and 721,078.78

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Solution

The fourth proportional to 1,204,513.76, 1,662,367.87 and 721,078.78 is: 995,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204,513.76 : 1,662,367.87 = 721,078.78 : x
  2. Step 2: Convert to fraction form
    1,204,513.76/1,662,367.87 = 721,078.78/x
  3. Step 3: Cross multiply
    1,204,513.76x = 1,662,367.87 × 721,078.78
  4. Step 4: Simplify right side
    1,204,513.76x = 1,198,698,187,849.48
  5. Step 5: Solve for x
    x = 1,198,698,187,849.48/1,204,513.76
  6. Step 6: Final answer
    x = 995,171.85

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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.