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Finding the Fourth Proportional to 543,627.20, 814,922.40 and 423,617.60

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Solution

The fourth proportional to 543,627.20, 814,922.40 and 423,617.60 is: 635,022.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,627.20 : 814,922.40 = 423,617.60 : x
  2. Step 2: Convert to fraction form
    543,627.20/814,922.40 = 423,617.60/x
  3. Step 3: Cross multiply
    543,627.20x = 814,922.40 × 423,617.60
  4. Step 4: Simplify right side
    543,627.20x = 345,215,471,274.24
  5. Step 5: Solve for x
    x = 345,215,471,274.24/543,627.20
  6. Step 6: Final answer
    x = 635,022.44

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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.