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Finding the Fourth Proportional to 678,498.56, 936,498.24 and 392,184.96

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Solution

The fourth proportional to 678,498.56, 936,498.24 and 392,184.96 is: 541,313.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,498.56 : 936,498.24 = 392,184.96 : x
  2. Step 2: Convert to fraction form
    678,498.56/936,498.24 = 392,184.96/x
  3. Step 3: Cross multiply
    678,498.56x = 936,498.24 × 392,184.96
  4. Step 4: Simplify right side
    678,498.56x = 367,280,524,794.47
  5. Step 5: Solve for x
    x = 367,280,524,794.47/678,498.56
  6. Step 6: Final answer
    x = 541,313.64

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