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Finding the Fourth Proportional to 493,074.64, 680,446.20 and 289,079.92

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Solution

The fourth proportional to 493,074.64, 680,446.20 and 289,079.92 is: 398,932.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,074.64 : 680,446.20 = 289,079.92 : x
  2. Step 2: Convert to fraction form
    493,074.64/680,446.20 = 289,079.92/x
  3. Step 3: Cross multiply
    493,074.64x = 680,446.20 × 289,079.92
  4. Step 4: Simplify right side
    493,074.64x = 196,703,333,060.30
  5. Step 5: Solve for x
    x = 196,703,333,060.30/493,074.64
  6. Step 6: Final answer
    x = 398,932.16

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