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Finding the Fourth Proportional to 697,988.90, 978,513.09 and 697,988.90

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Solution

The fourth proportional to 697,988.90, 978,513.09 and 697,988.90 is: 978,513.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,988.90 : 978,513.09 = 697,988.90 : x
  2. Step 2: Convert to fraction form
    697,988.90/978,513.09 = 697,988.90/x
  3. Step 3: Cross multiply
    697,988.90x = 978,513.09 × 697,988.90
  4. Step 4: Simplify right side
    697,988.90x = 682,991,275,324.70
  5. Step 5: Solve for x
    x = 682,991,275,324.70/697,988.90
  6. Step 6: Final answer
    x = 978,513.09

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