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Finding the Fourth Proportional to 1,214,860.60, 1,822,290.90 and 978,664.60

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Solution

The fourth proportional to 1,214,860.60, 1,822,290.90 and 978,664.60 is: 1,467,996.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,860.60 : 1,822,290.90 = 978,664.60 : x
  2. Step 2: Convert to fraction form
    1,214,860.60/1,822,290.90 = 978,664.60/x
  3. Step 3: Cross multiply
    1,214,860.60x = 1,822,290.90 × 978,664.60
  4. Step 4: Simplify right side
    1,214,860.60x = 1,783,411,594,732.14
  5. Step 5: Solve for x
    x = 1,783,411,594,732.14/1,214,860.60
  6. Step 6: Final answer
    x = 1,467,996.90

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