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Finding the Fourth Proportional to 653,201,999.80, 978,669,258.90 and 423,052,617.40

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Solution

The fourth proportional to 653,201,999.80, 978,669,258.90 and 423,052,617.40 is: 633,844,647.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,201,999.80 : 978,669,258.90 = 423,052,617.40 : x
  2. Step 2: Convert to fraction form
    653,201,999.80/978,669,258.90 = 423,052,617.40/x
  3. Step 3: Cross multiply
    653,201,999.80x = 978,669,258.90 × 423,052,617.40
  4. Step 4: Simplify right side
    653,201,999.80x = 414,028,591,546,563,200
  5. Step 5: Solve for x
    x = 414,028,591,546,563,200/653,201,999.80
  6. Step 6: Final answer
    x = 633,844,647.86

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