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Finding the Fourth Proportional to 394,724.54, 544,722.93 and 217,920.45

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Solution

The fourth proportional to 394,724.54, 544,722.93 and 217,920.45 is: 300,731.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,724.54 : 544,722.93 = 217,920.45 : x
  2. Step 2: Convert to fraction form
    394,724.54/544,722.93 = 217,920.45/x
  3. Step 3: Cross multiply
    394,724.54x = 544,722.93 × 217,920.45
  4. Step 4: Simplify right side
    394,724.54x = 118,706,263,307.30
  5. Step 5: Solve for x
    x = 118,706,263,307.30/394,724.54
  6. Step 6: Final answer
    x = 300,731.91

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