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Finding the Fourth Proportional to 504,678.12, 696,407.40 and 278,309.04

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Solution

The fourth proportional to 504,678.12, 696,407.40 and 278,309.04 is: 384,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,678.12 : 696,407.40 = 278,309.04 : x
  2. Step 2: Convert to fraction form
    504,678.12/696,407.40 = 278,309.04/x
  3. Step 3: Cross multiply
    504,678.12x = 696,407.40 × 278,309.04
  4. Step 4: Simplify right side
    504,678.12x = 193,816,474,942.90
  5. Step 5: Solve for x
    x = 193,816,474,942.90/504,678.12
  6. Step 6: Final answer
    x = 384,039.78

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