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Finding the Fourth Proportional to 872,771.14, 1,309,143.54 and 392,659.88

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Solution

The fourth proportional to 872,771.14, 1,309,143.54 and 392,659.88 is: 588,983.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,771.14 : 1,309,143.54 = 392,659.88 : x
  2. Step 2: Convert to fraction form
    872,771.14/1,309,143.54 = 392,659.88/x
  3. Step 3: Cross multiply
    872,771.14x = 1,309,143.54 × 392,659.88
  4. Step 4: Simplify right side
    872,771.14x = 514,048,145,319.18
  5. Step 5: Solve for x
    x = 514,048,145,319.18/872,771.14
  6. Step 6: Final answer
    x = 588,983.89

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