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Finding the Fourth Proportional to 978,201.20, 1,371,970 and 978,201.20

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Solution

The fourth proportional to 978,201.20, 1,371,970 and 978,201.20 is: 1,371,970

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,201.20 : 1,371,970 = 978,201.20 : x
  2. Step 2: Convert to fraction form
    978,201.20/1,371,970 = 978,201.20/x
  3. Step 3: Cross multiply
    978,201.20x = 1,371,970 × 978,201.20
  4. Step 4: Simplify right side
    978,201.20x = 1,342,062,700,364
  5. Step 5: Solve for x
    x = 1,342,062,700,364/978,201.20
  6. Step 6: Final answer
    x = 1,371,970

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