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Finding the Fourth Proportional to 721,648.53, 995,891.22 and 467,442.18

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Solution

The fourth proportional to 721,648.53, 995,891.22 and 467,442.18 is: 645,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,648.53 : 995,891.22 = 467,442.18 : x
  2. Step 2: Convert to fraction form
    721,648.53/995,891.22 = 467,442.18/x
  3. Step 3: Cross multiply
    721,648.53x = 995,891.22 × 467,442.18
  4. Step 4: Simplify right side
    721,648.53x = 465,521,562,919.66
  5. Step 5: Solve for x
    x = 465,521,562,919.66/721,648.53
  6. Step 6: Final answer
    x = 645,080.73

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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.