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Finding the Fourth Proportional to 515,297.38, 771,724.32 and 408,337.42

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Solution

The fourth proportional to 515,297.38, 771,724.32 and 408,337.42 is: 611,537.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,297.38 : 771,724.32 = 408,337.42 : x
  2. Step 2: Convert to fraction form
    515,297.38/771,724.32 = 408,337.42/x
  3. Step 3: Cross multiply
    515,297.38x = 771,724.32 × 408,337.42
  4. Step 4: Simplify right side
    515,297.38x = 315,123,917,780.05
  5. Step 5: Solve for x
    x = 315,123,917,780.05/515,297.38
  6. Step 6: Final answer
    x = 611,537.98

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