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Finding the Fourth Proportional to 479,768.50, 662,138.85 and 278,564.50

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Solution

The fourth proportional to 479,768.50, 662,138.85 and 278,564.50 is: 384,452.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,768.50 : 662,138.85 = 278,564.50 : x
  2. Step 2: Convert to fraction form
    479,768.50/662,138.85 = 278,564.50/x
  3. Step 3: Cross multiply
    479,768.50x = 662,138.85 × 278,564.50
  4. Step 4: Simplify right side
    479,768.50x = 184,448,377,680.83
  5. Step 5: Solve for x
    x = 184,448,377,680.83/479,768.50
  6. Step 6: Final answer
    x = 384,452.87

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