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Finding the Fourth Proportional to 412,944.20, 619,877.10 and 385,872.20

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Solution

The fourth proportional to 412,944.20, 619,877.10 and 385,872.20 is: 579,238.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,944.20 : 619,877.10 = 385,872.20 : x
  2. Step 2: Convert to fraction form
    412,944.20/619,877.10 = 385,872.20/x
  3. Step 3: Cross multiply
    412,944.20x = 619,877.10 × 385,872.20
  4. Step 4: Simplify right side
    412,944.20x = 239,193,340,306.62
  5. Step 5: Solve for x
    x = 239,193,340,306.62/412,944.20
  6. Step 6: Final answer
    x = 579,238.89

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