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Finding the Fourth Proportional to 627,687.18, 866,190.07 and 355,780.10

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Solution

The fourth proportional to 627,687.18, 866,190.07 and 355,780.10 is: 490,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,687.18 : 866,190.07 = 355,780.10 : x
  2. Step 2: Convert to fraction form
    627,687.18/866,190.07 = 355,780.10/x
  3. Step 3: Cross multiply
    627,687.18x = 866,190.07 × 355,780.10
  4. Step 4: Simplify right side
    627,687.18x = 308,173,192,333.81
  5. Step 5: Solve for x
    x = 308,173,192,333.81/627,687.18
  6. Step 6: Final answer
    x = 490,966.20

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