Home / 679,572.30-1,019,481.48-279,991.02

Finding the Fourth Proportional to 679,572.30, 1,019,481.48 and 279,991.02

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Solution

The fourth proportional to 679,572.30, 1,019,481.48 and 279,991.02 is: 420,037.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,572.30 : 1,019,481.48 = 279,991.02 : x
  2. Step 2: Convert to fraction form
    679,572.30/1,019,481.48 = 279,991.02/x
  3. Step 3: Cross multiply
    679,572.30x = 1,019,481.48 × 279,991.02
  4. Step 4: Simplify right side
    679,572.30x = 285,445,659,456.31
  5. Step 5: Solve for x
    x = 285,445,659,456.31/679,572.30
  6. Step 6: Final answer
    x = 420,037.22

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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.