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Finding the Fourth Proportional to 651,730,391.20, 978,729,327.60 and 345,620,375.20

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Solution

The fourth proportional to 651,730,391.20, 978,729,327.60 and 345,620,375.20 is: 519,031,799.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,730,391.20 : 978,729,327.60 = 345,620,375.20 : x
  2. Step 2: Convert to fraction form
    651,730,391.20/978,729,327.60 = 345,620,375.20/x
  3. Step 3: Cross multiply
    651,730,391.20x = 978,729,327.60 × 345,620,375.20
  4. Step 4: Simplify right side
    651,730,391.20x = 338,268,797,424,355,712
  5. Step 5: Solve for x
    x = 338,268,797,424,355,712/651,730,391.20
  6. Step 6: Final answer
    x = 519,031,799.03

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