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Finding the Fourth Proportional to 421,978.62, 632,530.46 and 263,843.94

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Solution

The fourth proportional to 421,978.62, 632,530.46 and 263,843.94 is: 395,492.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,978.62 : 632,530.46 = 263,843.94 : x
  2. Step 2: Convert to fraction form
    421,978.62/632,530.46 = 263,843.94/x
  3. Step 3: Cross multiply
    421,978.62x = 632,530.46 × 263,843.94
  4. Step 4: Simplify right side
    421,978.62x = 166,889,328,736.41
  5. Step 5: Solve for x
    x = 166,889,328,736.41/421,978.62
  6. Step 6: Final answer
    x = 395,492.38

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