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Finding the Fourth Proportional to 722,127.72, 996,592.34 and 399,867.80

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Solution

The fourth proportional to 722,127.72, 996,592.34 and 399,867.80 is: 551,848.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,127.72 : 996,592.34 = 399,867.80 : x
  2. Step 2: Convert to fraction form
    722,127.72/996,592.34 = 399,867.80/x
  3. Step 3: Cross multiply
    722,127.72x = 996,592.34 × 399,867.80
  4. Step 4: Simplify right side
    722,127.72x = 398,505,186,492.65
  5. Step 5: Solve for x
    x = 398,505,186,492.65/722,127.72
  6. Step 6: Final answer
    x = 551,848.62

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