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Finding the Fourth Proportional to 721,195.04, 995,218.80 and 394,502.72

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Solution

The fourth proportional to 721,195.04, 995,218.80 and 394,502.72 is: 544,397.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,195.04 : 995,218.80 = 394,502.72 : x
  2. Step 2: Convert to fraction form
    721,195.04/995,218.80 = 394,502.72/x
  3. Step 3: Cross multiply
    721,195.04x = 995,218.80 × 394,502.72
  4. Step 4: Simplify right side
    721,195.04x = 392,616,523,595.14
  5. Step 5: Solve for x
    x = 392,616,523,595.14/721,195.04
  6. Step 6: Final answer
    x = 544,397.15

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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.