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Finding the Fourth Proportional to 509,928.80, 703,719.02 and 280,503.14

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Solution

The fourth proportional to 509,928.80, 703,719.02 and 280,503.14 is: 387,103.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,928.80 : 703,719.02 = 280,503.14 : x
  2. Step 2: Convert to fraction form
    509,928.80/703,719.02 = 280,503.14/x
  3. Step 3: Cross multiply
    509,928.80x = 703,719.02 × 280,503.14
  4. Step 4: Simplify right side
    509,928.80x = 197,395,395,144.51
  5. Step 5: Solve for x
    x = 197,395,395,144.51/509,928.80
  6. Step 6: Final answer
    x = 387,103.84

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