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Finding the Fourth Proportional to 724,781.80, 1,000,245.12 and 402,491.80

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Solution

The fourth proportional to 724,781.80, 1,000,245.12 and 402,491.80 is: 555,464.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,781.80 : 1,000,245.12 = 402,491.80 : x
  2. Step 2: Convert to fraction form
    724,781.80/1,000,245.12 = 402,491.80/x
  3. Step 3: Cross multiply
    724,781.80x = 1,000,245.12 × 402,491.80
  4. Step 4: Simplify right side
    724,781.80x = 402,590,458,790.02
  5. Step 5: Solve for x
    x = 402,590,458,790.02/724,781.80
  6. Step 6: Final answer
    x = 555,464.36

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