Home / 721,261.59-995,099.26-415,331.38

Finding the Fourth Proportional to 721,261.59, 995,099.26 and 415,331.38

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Solution

The fourth proportional to 721,261.59, 995,099.26 and 415,331.38 is: 573,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,261.59 : 995,099.26 = 415,331.38 : x
  2. Step 2: Convert to fraction form
    721,261.59/995,099.26 = 415,331.38/x
  3. Step 3: Cross multiply
    721,261.59x = 995,099.26 × 415,331.38
  4. Step 4: Simplify right side
    721,261.59x = 413,295,948,892.78
  5. Step 5: Solve for x
    x = 413,295,948,892.78/721,261.59
  6. Step 6: Final answer
    x = 573,018.10

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Double scale
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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.