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Finding the Fourth Proportional to 667,157.80, 920,670.86 and 361,228.92

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Solution

The fourth proportional to 667,157.80, 920,670.86 and 361,228.92 is: 498,492.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,157.80 : 920,670.86 = 361,228.92 : x
  2. Step 2: Convert to fraction form
    667,157.80/920,670.86 = 361,228.92/x
  3. Step 3: Cross multiply
    667,157.80x = 920,670.86 × 361,228.92
  4. Step 4: Simplify right side
    667,157.80x = 332,572,940,433.27
  5. Step 5: Solve for x
    x = 332,572,940,433.27/667,157.80
  6. Step 6: Final answer
    x = 498,492.17

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