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Finding the Fourth Proportional to 679,515.28, 1,019,395.95 and 279,934

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Solution

The fourth proportional to 679,515.28, 1,019,395.95 and 279,934 is: 419,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,515.28 : 1,019,395.95 = 279,934 : x
  2. Step 2: Convert to fraction form
    679,515.28/1,019,395.95 = 279,934/x
  3. Step 3: Cross multiply
    679,515.28x = 1,019,395.95 × 279,934
  4. Step 4: Simplify right side
    679,515.28x = 285,363,585,867.30
  5. Step 5: Solve for x
    x = 285,363,585,867.30/679,515.28
  6. Step 6: Final answer
    x = 419,951.68

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