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Finding the Fourth Proportional to 721,493.90, 995,227.77 and 476,480.91

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Solution

The fourth proportional to 721,493.90, 995,227.77 and 476,480.91 is: 657,257.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,493.90 : 995,227.77 = 476,480.91 : x
  2. Step 2: Convert to fraction form
    721,493.90/995,227.77 = 476,480.91/x
  3. Step 3: Cross multiply
    721,493.90x = 995,227.77 × 476,480.91
  4. Step 4: Simplify right side
    721,493.90x = 474,207,039,025.78
  5. Step 5: Solve for x
    x = 474,207,039,025.78/721,493.90
  6. Step 6: Final answer
    x = 657,257.17

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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.