Home / 1,368,964.80-2,053,738.80-422,431.20

Finding the Fourth Proportional to 1,368,964.80, 2,053,738.80 and 422,431.20

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Solution

The fourth proportional to 1,368,964.80, 2,053,738.80 and 422,431.20 is: 633,736.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,964.80 : 2,053,738.80 = 422,431.20 : x
  2. Step 2: Convert to fraction form
    1,368,964.80/2,053,738.80 = 422,431.20/x
  3. Step 3: Cross multiply
    1,368,964.80x = 2,053,738.80 × 422,431.20
  4. Step 4: Simplify right side
    1,368,964.80x = 867,563,345,770.56
  5. Step 5: Solve for x
    x = 867,563,345,770.56/1,368,964.80
  6. Step 6: Final answer
    x = 633,736.78

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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.