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Finding the Fourth Proportional to 538,801.32, 806,978.60 and 417,887.64

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Solution

The fourth proportional to 538,801.32, 806,978.60 and 417,887.64 is: 625,882.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,801.32 : 806,978.60 = 417,887.64 : x
  2. Step 2: Convert to fraction form
    538,801.32/806,978.60 = 417,887.64/x
  3. Step 3: Cross multiply
    538,801.32x = 806,978.60 × 417,887.64
  4. Step 4: Simplify right side
    538,801.32x = 337,226,382,684.50
  5. Step 5: Solve for x
    x = 337,226,382,684.50/538,801.32
  6. Step 6: Final answer
    x = 625,882.62

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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.