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Finding the Fourth Proportional to 2,978,114.80, 4,468,338.60 and 1,085,047.60

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Solution

The fourth proportional to 2,978,114.80, 4,468,338.60 and 1,085,047.60 is: 1,627,996.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978,114.80 : 4,468,338.60 = 1,085,047.60 : x
  2. Step 2: Convert to fraction form
    2,978,114.80/4,468,338.60 = 1,085,047.60/x
  3. Step 3: Cross multiply
    2,978,114.80x = 4,468,338.60 × 1,085,047.60
  4. Step 4: Simplify right side
    2,978,114.80x = 4,848,360,073,917.36
  5. Step 5: Solve for x
    x = 4,848,360,073,917.36/2,978,114.80
  6. Step 6: Final answer
    x = 1,627,996.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.