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Finding the Fourth Proportional to 456,704.20, 683,744.10 and 279,557.20

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Solution

The fourth proportional to 456,704.20, 683,744.10 and 279,557.20 is: 418,532.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,704.20 : 683,744.10 = 279,557.20 : x
  2. Step 2: Convert to fraction form
    456,704.20/683,744.10 = 279,557.20/x
  3. Step 3: Cross multiply
    456,704.20x = 683,744.10 × 279,557.20
  4. Step 4: Simplify right side
    456,704.20x = 191,145,586,112.52
  5. Step 5: Solve for x
    x = 191,145,586,112.52/456,704.20
  6. Step 6: Final answer
    x = 418,532.58

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