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Finding the Fourth Proportional to 978,217.48, 1,469,578.02 and 690,693.40

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Solution

The fourth proportional to 978,217.48, 1,469,578.02 and 690,693.40 is: 1,037,630.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,217.48 : 1,469,578.02 = 690,693.40 : x
  2. Step 2: Convert to fraction form
    978,217.48/1,469,578.02 = 690,693.40/x
  3. Step 3: Cross multiply
    978,217.48x = 1,469,578.02 × 690,693.40
  4. Step 4: Simplify right side
    978,217.48x = 1,015,027,839,199.07
  5. Step 5: Solve for x
    x = 1,015,027,839,199.07/978,217.48
  6. Step 6: Final answer
    x = 1,037,630.04

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