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Finding the Fourth Proportional to 490,665.80, 735,998.70 and 455,236.40

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Solution

The fourth proportional to 490,665.80, 735,998.70 and 455,236.40 is: 682,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,665.80 : 735,998.70 = 455,236.40 : x
  2. Step 2: Convert to fraction form
    490,665.80/735,998.70 = 455,236.40/x
  3. Step 3: Cross multiply
    490,665.80x = 735,998.70 × 455,236.40
  4. Step 4: Simplify right side
    490,665.80x = 335,053,398,592.68
  5. Step 5: Solve for x
    x = 335,053,398,592.68/490,665.80
  6. Step 6: Final answer
    x = 682,854.60

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