Home / 721,634.44-995,845.68-399,324.90

Finding the Fourth Proportional to 721,634.44, 995,845.68 and 399,324.90

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Solution

The fourth proportional to 721,634.44, 995,845.68 and 399,324.90 is: 551,062.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,634.44 : 995,845.68 = 399,324.90 : x
  2. Step 2: Convert to fraction form
    721,634.44/995,845.68 = 399,324.90/x
  3. Step 3: Cross multiply
    721,634.44x = 995,845.68 × 399,324.90
  4. Step 4: Simplify right side
    721,634.44x = 397,665,976,581.43
  5. Step 5: Solve for x
    x = 397,665,976,581.43/721,634.44
  6. Step 6: Final answer
    x = 551,062.91

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1.5x scale

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.