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Finding the Fourth Proportional to 722,204.61, 996,630.11 and 399,907.79

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Solution

The fourth proportional to 722,204.61, 996,630.11 and 399,907.79 is: 551,865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,204.61 : 996,630.11 = 399,907.79 : x
  2. Step 2: Convert to fraction form
    722,204.61/996,630.11 = 399,907.79/x
  3. Step 3: Cross multiply
    722,204.61x = 996,630.11 × 399,907.79
  4. Step 4: Simplify right side
    722,204.61x = 398,560,144,737.56
  5. Step 5: Solve for x
    x = 398,560,144,737.56/722,204.61
  6. Step 6: Final answer
    x = 551,865.97

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