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Finding the Fourth Proportional to 485,324.10, 727,986.15 and 441,000.90

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Solution

The fourth proportional to 485,324.10, 727,986.15 and 441,000.90 is: 661,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,324.10 : 727,986.15 = 441,000.90 : x
  2. Step 2: Convert to fraction form
    485,324.10/727,986.15 = 441,000.90/x
  3. Step 3: Cross multiply
    485,324.10x = 727,986.15 × 441,000.90
  4. Step 4: Simplify right side
    485,324.10x = 321,042,547,337.54
  5. Step 5: Solve for x
    x = 321,042,547,337.54/485,324.10
  6. Step 6: Final answer
    x = 661,501.35

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.