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Finding the Fourth Proportional to 550,287.70, 825,431.55 and 361,330.90

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Solution

The fourth proportional to 550,287.70, 825,431.55 and 361,330.90 is: 541,996.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,287.70 : 825,431.55 = 361,330.90 : x
  2. Step 2: Convert to fraction form
    550,287.70/825,431.55 = 361,330.90/x
  3. Step 3: Cross multiply
    550,287.70x = 825,431.55 × 361,330.90
  4. Step 4: Simplify right side
    550,287.70x = 298,253,924,849.90
  5. Step 5: Solve for x
    x = 298,253,924,849.90/550,287.70
  6. Step 6: Final answer
    x = 541,996.35

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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.