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Finding the Fourth Proportional to 492,945.57, 680,296.39 and 278,007.21

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Solution

The fourth proportional to 492,945.57, 680,296.39 and 278,007.21 is: 383,667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,945.57 : 680,296.39 = 278,007.21 : x
  2. Step 2: Convert to fraction form
    492,945.57/680,296.39 = 278,007.21/x
  3. Step 3: Cross multiply
    492,945.57x = 680,296.39 × 278,007.21
  4. Step 4: Simplify right side
    492,945.57x = 189,127,300,661.95
  5. Step 5: Solve for x
    x = 189,127,300,661.95/492,945.57
  6. Step 6: Final answer
    x = 383,667.72

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