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Finding the Fourth Proportional to 647,845.80, 971,331.30 and 344,290.20

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Solution

The fourth proportional to 647,845.80, 971,331.30 and 344,290.20 is: 516,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,845.80 : 971,331.30 = 344,290.20 : x
  2. Step 2: Convert to fraction form
    647,845.80/971,331.30 = 344,290.20/x
  3. Step 3: Cross multiply
    647,845.80x = 971,331.30 × 344,290.20
  4. Step 4: Simplify right side
    647,845.80x = 334,419,847,543.26
  5. Step 5: Solve for x
    x = 334,419,847,543.26/647,845.80
  6. Step 6: Final answer
    x = 516,202.85

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