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Finding the Fourth Proportional to 420,964.40, 631,446.60 and 253,002.80

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Solution

The fourth proportional to 420,964.40, 631,446.60 and 253,002.80 is: 379,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,964.40 : 631,446.60 = 253,002.80 : x
  2. Step 2: Convert to fraction form
    420,964.40/631,446.60 = 253,002.80/x
  3. Step 3: Cross multiply
    420,964.40x = 631,446.60 × 253,002.80
  4. Step 4: Simplify right side
    420,964.40x = 159,757,757,850.48
  5. Step 5: Solve for x
    x = 159,757,757,850.48/420,964.40
  6. Step 6: Final answer
    x = 379,504.20

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