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Finding the Fourth Proportional to 664,858.40, 997,287.60 and 310,564.40

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Solution

The fourth proportional to 664,858.40, 997,287.60 and 310,564.40 is: 465,846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,858.40 : 997,287.60 = 310,564.40 : x
  2. Step 2: Convert to fraction form
    664,858.40/997,287.60 = 310,564.40/x
  3. Step 3: Cross multiply
    664,858.40x = 997,287.60 × 310,564.40
  4. Step 4: Simplify right side
    664,858.40x = 309,722,025,121.44
  5. Step 5: Solve for x
    x = 309,722,025,121.44/664,858.40
  6. Step 6: Final answer
    x = 465,846.60

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