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Finding the Fourth Proportional to 378,639.12, 522,523.47 and 206,560.76

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Solution

The fourth proportional to 378,639.12, 522,523.47 and 206,560.76 is: 285,054.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,639.12 : 522,523.47 = 206,560.76 : x
  2. Step 2: Convert to fraction form
    378,639.12/522,523.47 = 206,560.76/x
  3. Step 3: Cross multiply
    378,639.12x = 522,523.47 × 206,560.76
  4. Step 4: Simplify right side
    378,639.12x = 107,932,842,468.42
  5. Step 5: Solve for x
    x = 107,932,842,468.42/378,639.12
  6. Step 6: Final answer
    x = 285,054.65

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