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Finding the Fourth Proportional to 708,876, 978,306.90 and 403,048.35

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Solution

The fourth proportional to 708,876, 978,306.90 and 403,048.35 is: 556,239.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,876 : 978,306.90 = 403,048.35 : x
  2. Step 2: Convert to fraction form
    708,876/978,306.90 = 403,048.35/x
  3. Step 3: Cross multiply
    708,876x = 978,306.90 × 403,048.35
  4. Step 4: Simplify right side
    708,876x = 394,304,981,838.62
  5. Step 5: Solve for x
    x = 394,304,981,838.62/708,876
  6. Step 6: Final answer
    x = 556,239.71

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