Home / 679,443.88-1,019,288.38-279,866.52

Finding the Fourth Proportional to 679,443.88, 1,019,288.38 and 279,866.52

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Solution

The fourth proportional to 679,443.88, 1,019,288.38 and 279,866.52 is: 419,850.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,443.88 : 1,019,288.38 = 279,866.52 : x
  2. Step 2: Convert to fraction form
    679,443.88/1,019,288.38 = 279,866.52/x
  3. Step 3: Cross multiply
    679,443.88x = 1,019,288.38 × 279,866.52
  4. Step 4: Simplify right side
    679,443.88x = 285,264,691,787.04
  5. Step 5: Solve for x
    x = 285,264,691,787.04/679,443.88
  6. Step 6: Final answer
    x = 419,850.26

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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.