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Finding the Fourth Proportional to 543,617.20, 814,907.40 and 423,607.60

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Solution

The fourth proportional to 543,617.20, 814,907.40 and 423,607.60 is: 635,007.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,617.20 : 814,907.40 = 423,607.60 : x
  2. Step 2: Convert to fraction form
    543,617.20/814,907.40 = 423,607.60/x
  3. Step 3: Cross multiply
    543,617.20x = 814,907.40 × 423,607.60
  4. Step 4: Simplify right side
    543,617.20x = 345,200,967,936.24
  5. Step 5: Solve for x
    x = 345,200,967,936.24/543,617.20
  6. Step 6: Final answer
    x = 635,007.44

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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.