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Finding the Fourth Proportional to 643,499.40, 888,012.24 and 353,110.07

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Solution

The fourth proportional to 643,499.40, 888,012.24 and 353,110.07 is: 487,282.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,499.40 : 888,012.24 = 353,110.07 : x
  2. Step 2: Convert to fraction form
    643,499.40/888,012.24 = 353,110.07/x
  3. Step 3: Cross multiply
    643,499.40x = 888,012.24 × 353,110.07
  4. Step 4: Simplify right side
    643,499.40x = 313,566,059,787.20
  5. Step 5: Solve for x
    x = 313,566,059,787.20/643,499.40
  6. Step 6: Final answer
    x = 487,282.60

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