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Finding the Fourth Proportional to 418,566,542.20, 627,849,813.30 and 127,431,352.60

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Solution

The fourth proportional to 418,566,542.20, 627,849,813.30 and 127,431,352.60 is: 191,147,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,566,542.20 : 627,849,813.30 = 127,431,352.60 : x
  2. Step 2: Convert to fraction form
    418,566,542.20/627,849,813.30 = 127,431,352.60/x
  3. Step 3: Cross multiply
    418,566,542.20x = 627,849,813.30 × 127,431,352.60
  4. Step 4: Simplify right side
    418,566,542.20x = 80,007,750,938,476,464
  5. Step 5: Solve for x
    x = 80,007,750,938,476,464/418,566,542.20
  6. Step 6: Final answer
    x = 191,147,028.90

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