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Finding the Fourth Proportional to 721,421.10, 995,775.39 and 466,765.74

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Solution

The fourth proportional to 721,421.10, 995,775.39 and 466,765.74 is: 644,275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,421.10 : 995,775.39 = 466,765.74 : x
  2. Step 2: Convert to fraction form
    721,421.10/995,775.39 = 466,765.74/x
  3. Step 3: Cross multiply
    721,421.10x = 995,775.39 × 466,765.74
  4. Step 4: Simplify right side
    721,421.10x = 464,793,836,787.14
  5. Step 5: Solve for x
    x = 464,793,836,787.14/721,421.10
  6. Step 6: Final answer
    x = 644,275.36

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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.