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Finding the Fourth Proportional to 485,651.10, 728,476.65 and 327,020.70

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Solution

The fourth proportional to 485,651.10, 728,476.65 and 327,020.70 is: 490,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,651.10 : 728,476.65 = 327,020.70 : x
  2. Step 2: Convert to fraction form
    485,651.10/728,476.65 = 327,020.70/x
  3. Step 3: Cross multiply
    485,651.10x = 728,476.65 × 327,020.70
  4. Step 4: Simplify right side
    485,651.10x = 238,226,944,016.66
  5. Step 5: Solve for x
    x = 238,226,944,016.66/485,651.10
  6. Step 6: Final answer
    x = 490,531.05

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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.