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Finding the Fourth Proportional to 412,856.82, 618,478.61 and 284,470.38

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Solution

The fourth proportional to 412,856.82, 618,478.61 and 284,470.38 is: 426,149.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,856.82 : 618,478.61 = 284,470.38 : x
  2. Step 2: Convert to fraction form
    412,856.82/618,478.61 = 284,470.38/x
  3. Step 3: Cross multiply
    412,856.82x = 618,478.61 × 284,470.38
  4. Step 4: Simplify right side
    412,856.82x = 175,938,843,786.22
  5. Step 5: Solve for x
    x = 175,938,843,786.22/412,856.82
  6. Step 6: Final answer
    x = 426,149.78

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