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Finding the Fourth Proportional to 543,163.20, 814,226.40 and 423,153.60

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Solution

The fourth proportional to 543,163.20, 814,226.40 and 423,153.60 is: 634,326.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,163.20 : 814,226.40 = 423,153.60 : x
  2. Step 2: Convert to fraction form
    543,163.20/814,226.40 = 423,153.60/x
  3. Step 3: Cross multiply
    543,163.20x = 814,226.40 × 423,153.60
  4. Step 4: Simplify right side
    543,163.20x = 344,542,832,375.04
  5. Step 5: Solve for x
    x = 344,542,832,375.04/543,163.20
  6. Step 6: Final answer
    x = 634,326.54

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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.