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Finding the Fourth Proportional to 423,600.49, 635,400.96 and 265,939.66

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Solution

The fourth proportional to 423,600.49, 635,400.96 and 265,939.66 is: 398,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,600.49 : 635,400.96 = 265,939.66 : x
  2. Step 2: Convert to fraction form
    423,600.49/635,400.96 = 265,939.66/x
  3. Step 3: Cross multiply
    423,600.49x = 635,400.96 × 265,939.66
  4. Step 4: Simplify right side
    423,600.49x = 168,978,311,488.92
  5. Step 5: Solve for x
    x = 168,978,311,488.92/423,600.49
  6. Step 6: Final answer
    x = 398,909.63

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