Home / 1,320,377.80-1,978,233.90-1,082,432.20

Finding the Fourth Proportional to 1,320,377.80, 1,978,233.90 and 1,082,432.20

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Solution

The fourth proportional to 1,320,377.80, 1,978,233.90 and 1,082,432.20 is: 1,621,735.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,377.80 : 1,978,233.90 = 1,082,432.20 : x
  2. Step 2: Convert to fraction form
    1,320,377.80/1,978,233.90 = 1,082,432.20/x
  3. Step 3: Cross multiply
    1,320,377.80x = 1,978,233.90 × 1,082,432.20
  4. Step 4: Simplify right side
    1,320,377.80x = 2,141,304,072,491.58
  5. Step 5: Solve for x
    x = 2,141,304,072,491.58/1,320,377.80
  6. Step 6: Final answer
    x = 1,621,735.89

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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.