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Finding the Fourth Proportional to 543,157.20, 815,610.60 and 410,187.60

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Solution

The fourth proportional to 543,157.20, 815,610.60 and 410,187.60 is: 615,942.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,157.20 : 815,610.60 = 410,187.60 : x
  2. Step 2: Convert to fraction form
    543,157.20/815,610.60 = 410,187.60/x
  3. Step 3: Cross multiply
    543,157.20x = 815,610.60 × 410,187.60
  4. Step 4: Simplify right side
    543,157.20x = 334,553,354,548.56
  5. Step 5: Solve for x
    x = 334,553,354,548.56/543,157.20
  6. Step 6: Final answer
    x = 615,942.04

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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.