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Finding the Fourth Proportional to 618,998.20, 928,367.70 and 303,681.40

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Solution

The fourth proportional to 618,998.20, 928,367.70 and 303,681.40 is: 455,458.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,998.20 : 928,367.70 = 303,681.40 : x
  2. Step 2: Convert to fraction form
    618,998.20/928,367.70 = 303,681.40/x
  3. Step 3: Cross multiply
    618,998.20x = 928,367.70 × 303,681.40
  4. Step 4: Simplify right side
    618,998.20x = 281,928,002,850.78
  5. Step 5: Solve for x
    x = 281,928,002,850.78/618,998.20
  6. Step 6: Final answer
    x = 455,458.52

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