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Finding the Fourth Proportional to 645,291.20, 967,807.20 and 308,331.20

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Solution

The fourth proportional to 645,291.20, 967,807.20 and 308,331.20 is: 462,434.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,291.20 : 967,807.20 = 308,331.20 : x
  2. Step 2: Convert to fraction form
    645,291.20/967,807.20 = 308,331.20/x
  3. Step 3: Cross multiply
    645,291.20x = 967,807.20 × 308,331.20
  4. Step 4: Simplify right side
    645,291.20x = 298,405,155,344.64
  5. Step 5: Solve for x
    x = 298,405,155,344.64/645,291.20
  6. Step 6: Final answer
    x = 462,434.87

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