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Finding the Fourth Proportional to 978,755.80, 1,371,657.80 and 978,755.80

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Solution

The fourth proportional to 978,755.80, 1,371,657.80 and 978,755.80 is: 1,371,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,755.80 : 1,371,657.80 = 978,755.80 : x
  2. Step 2: Convert to fraction form
    978,755.80/1,371,657.80 = 978,755.80/x
  3. Step 3: Cross multiply
    978,755.80x = 1,371,657.80 × 978,755.80
  4. Step 4: Simplify right side
    978,755.80x = 1,342,518,027,365.24
  5. Step 5: Solve for x
    x = 1,342,518,027,365.24/978,755.80
  6. Step 6: Final answer
    x = 1,371,657.80

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