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Finding the Fourth Proportional to 411,198.20, 617,834.10 and 261,510.20

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Solution

The fourth proportional to 411,198.20, 617,834.10 and 261,510.20 is: 392,924.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,198.20 : 617,834.10 = 261,510.20 : x
  2. Step 2: Convert to fraction form
    411,198.20/617,834.10 = 261,510.20/x
  3. Step 3: Cross multiply
    411,198.20x = 617,834.10 × 261,510.20
  4. Step 4: Simplify right side
    411,198.20x = 161,569,919,057.82
  5. Step 5: Solve for x
    x = 161,569,919,057.82/411,198.20
  6. Step 6: Final answer
    x = 392,924.67

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