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Finding the Fourth Proportional to 1,263,844.80, 1,892,080.80 and 1,226,980.80

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Solution

The fourth proportional to 1,263,844.80, 1,892,080.80 and 1,226,980.80 is: 1,836,892.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,844.80 : 1,892,080.80 = 1,226,980.80 : x
  2. Step 2: Convert to fraction form
    1,263,844.80/1,892,080.80 = 1,226,980.80/x
  3. Step 3: Cross multiply
    1,263,844.80x = 1,892,080.80 × 1,226,980.80
  4. Step 4: Simplify right side
    1,263,844.80x = 2,321,546,813,648.64
  5. Step 5: Solve for x
    x = 2,321,546,813,648.64/1,263,844.80
  6. Step 6: Final answer
    x = 1,836,892.33

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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.