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Finding the Fourth Proportional to 543,326.20, 814,989.30 and 318,794.20

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Solution

The fourth proportional to 543,326.20, 814,989.30 and 318,794.20 is: 478,191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,326.20 : 814,989.30 = 318,794.20 : x
  2. Step 2: Convert to fraction form
    543,326.20/814,989.30 = 318,794.20/x
  3. Step 3: Cross multiply
    543,326.20x = 814,989.30 × 318,794.20
  4. Step 4: Simplify right side
    543,326.20x = 259,813,861,902.06
  5. Step 5: Solve for x
    x = 259,813,861,902.06/543,326.20
  6. Step 6: Final answer
    x = 478,191.30

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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.