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Finding the Fourth Proportional to 490,387.57, 677,036.76 and 388,823.29

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Solution

The fourth proportional to 490,387.57, 677,036.76 and 388,823.29 is: 536,815.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,387.57 : 677,036.76 = 388,823.29 : x
  2. Step 2: Convert to fraction form
    490,387.57/677,036.76 = 388,823.29/x
  3. Step 3: Cross multiply
    490,387.57x = 677,036.76 × 388,823.29
  4. Step 4: Simplify right side
    490,387.57x = 263,247,660,474.14
  5. Step 5: Solve for x
    x = 263,247,660,474.14/490,387.57
  6. Step 6: Final answer
    x = 536,815.52

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