Home / 721,633.16-995,829.24-399,356.84

Finding the Fourth Proportional to 721,633.16, 995,829.24 and 399,356.84

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Solution

The fourth proportional to 721,633.16, 995,829.24 and 399,356.84 is: 551,098.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,633.16 : 995,829.24 = 399,356.84 : x
  2. Step 2: Convert to fraction form
    721,633.16/995,829.24 = 399,356.84/x
  3. Step 3: Cross multiply
    721,633.16x = 995,829.24 × 399,356.84
  4. Step 4: Simplify right side
    721,633.16x = 397,691,218,466.00
  5. Step 5: Solve for x
    x = 397,691,218,466.00/721,633.16
  6. Step 6: Final answer
    x = 551,098.87

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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.