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Finding the Fourth Proportional to 659,651,369.60, 989,589,028.80 and 199,585,884.80

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Solution

The fourth proportional to 659,651,369.60, 989,589,028.80 and 199,585,884.80 is: 299,412,706.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,651,369.60 : 989,589,028.80 = 199,585,884.80 : x
  2. Step 2: Convert to fraction form
    659,651,369.60/989,589,028.80 = 199,585,884.80/x
  3. Step 3: Cross multiply
    659,651,369.60x = 989,589,028.80 × 199,585,884.80
  4. Step 4: Simplify right side
    659,651,369.60x = 197,508,001,901,420,672
  5. Step 5: Solve for x
    x = 197,508,001,901,420,672/659,651,369.60
  6. Step 6: Final answer
    x = 299,412,706.47

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