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Finding the Fourth Proportional to 1,314,978.40, 1,972,467.60 and 1,216,563.40

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Solution

The fourth proportional to 1,314,978.40, 1,972,467.60 and 1,216,563.40 is: 1,824,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,978.40 : 1,972,467.60 = 1,216,563.40 : x
  2. Step 2: Convert to fraction form
    1,314,978.40/1,972,467.60 = 1,216,563.40/x
  3. Step 3: Cross multiply
    1,314,978.40x = 1,972,467.60 × 1,216,563.40
  4. Step 4: Simplify right side
    1,314,978.40x = 2,399,631,889,845.84
  5. Step 5: Solve for x
    x = 2,399,631,889,845.84/1,314,978.40
  6. Step 6: Final answer
    x = 1,824,845.10

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