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Finding the Fourth Proportional to 1,318,461.60, 1,978,858.80 and 1,129,504.80

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Solution

The fourth proportional to 1,318,461.60, 1,978,858.80 and 1,129,504.80 is: 1,695,256.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,461.60 : 1,978,858.80 = 1,129,504.80 : x
  2. Step 2: Convert to fraction form
    1,318,461.60/1,978,858.80 = 1,129,504.80/x
  3. Step 3: Cross multiply
    1,318,461.60x = 1,978,858.80 × 1,129,504.80
  4. Step 4: Simplify right side
    1,318,461.60x = 2,235,130,513,122.24
  5. Step 5: Solve for x
    x = 2,235,130,513,122.24/1,318,461.60
  6. Step 6: Final answer
    x = 1,695,256.44

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