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Finding the Fourth Proportional to 721,353.60, 995,289.12 and 466,398

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Solution

The fourth proportional to 721,353.60, 995,289.12 and 466,398 is: 643,513.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,353.60 : 995,289.12 = 466,398 : x
  2. Step 2: Convert to fraction form
    721,353.60/995,289.12 = 466,398/x
  3. Step 3: Cross multiply
    721,353.60x = 995,289.12 × 466,398
  4. Step 4: Simplify right side
    721,353.60x = 464,200,854,989.76
  5. Step 5: Solve for x
    x = 464,200,854,989.76/721,353.60
  6. Step 6: Final answer
    x = 643,513.60

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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.