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Finding the Fourth Proportional to 543,313.20, 814,969.80 and 342,546.60

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Solution

The fourth proportional to 543,313.20, 814,969.80 and 342,546.60 is: 513,819.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,313.20 : 814,969.80 = 342,546.60 : x
  2. Step 2: Convert to fraction form
    543,313.20/814,969.80 = 342,546.60/x
  3. Step 3: Cross multiply
    543,313.20x = 814,969.80 × 342,546.60
  4. Step 4: Simplify right side
    543,313.20x = 279,165,134,092.68
  5. Step 5: Solve for x
    x = 279,165,134,092.68/543,313.20
  6. Step 6: Final answer
    x = 513,819.90

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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.