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Finding the Fourth Proportional to 721,494.90, 995,229.15 and 476,481.91

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Solution

The fourth proportional to 721,494.90, 995,229.15 and 476,481.91 is: 657,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,494.90 : 995,229.15 = 476,481.91 : x
  2. Step 2: Convert to fraction form
    721,494.90/995,229.15 = 476,481.91/x
  3. Step 3: Cross multiply
    721,494.90x = 995,229.15 × 476,481.91
  4. Step 4: Simplify right side
    721,494.90x = 474,208,686,279.68
  5. Step 5: Solve for x
    x = 474,208,686,279.68/721,494.90
  6. Step 6: Final answer
    x = 657,258.54

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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.