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Finding the Fourth Proportional to 472,721, 708,683.78 and 219,873.02

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Solution

The fourth proportional to 472,721, 708,683.78 and 219,873.02 is: 329,624.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,721 : 708,683.78 = 219,873.02 : x
  2. Step 2: Convert to fraction form
    472,721/708,683.78 = 219,873.02/x
  3. Step 3: Cross multiply
    472,721x = 708,683.78 × 219,873.02
  4. Step 4: Simplify right side
    472,721x = 155,820,442,933.62
  5. Step 5: Solve for x
    x = 155,820,442,933.62/472,721
  6. Step 6: Final answer
    x = 329,624.54

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