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Finding the Fourth Proportional to 815,999.20, 1,223,998.80 and 567,167.20

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Solution

The fourth proportional to 815,999.20, 1,223,998.80 and 567,167.20 is: 850,750.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,999.20 : 1,223,998.80 = 567,167.20 : x
  2. Step 2: Convert to fraction form
    815,999.20/1,223,998.80 = 567,167.20/x
  3. Step 3: Cross multiply
    815,999.20x = 1,223,998.80 × 567,167.20
  4. Step 4: Simplify right side
    815,999.20x = 694,211,972,199.36
  5. Step 5: Solve for x
    x = 694,211,972,199.36/815,999.20
  6. Step 6: Final answer
    x = 850,750.80

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