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Finding the Fourth Proportional to 978,736.80, 1,466,938.80 and 410,116.80

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Solution

The fourth proportional to 978,736.80, 1,466,938.80 and 410,116.80 is: 614,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,736.80 : 1,466,938.80 = 410,116.80 : x
  2. Step 2: Convert to fraction form
    978,736.80/1,466,938.80 = 410,116.80/x
  3. Step 3: Cross multiply
    978,736.80x = 1,466,938.80 × 410,116.80
  4. Step 4: Simplify right side
    978,736.80x = 601,616,246,451.84
  5. Step 5: Solve for x
    x = 601,616,246,451.84/978,736.80
  6. Step 6: Final answer
    x = 614,686.45

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