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Finding the Fourth Proportional to 721,158.88, 995,406.96 and 506,351.20

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Solution

The fourth proportional to 721,158.88, 995,406.96 and 506,351.20 is: 698,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,158.88 : 995,406.96 = 506,351.20 : x
  2. Step 2: Convert to fraction form
    721,158.88/995,406.96 = 506,351.20/x
  3. Step 3: Cross multiply
    721,158.88x = 995,406.96 × 506,351.20
  4. Step 4: Simplify right side
    721,158.88x = 504,025,508,684.35
  5. Step 5: Solve for x
    x = 504,025,508,684.35/721,158.88
  6. Step 6: Final answer
    x = 698,910.49

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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.