Home / 803,418.78-1,205,109.79-204,380.65

Finding the Fourth Proportional to 803,418.78, 1,205,109.79 and 204,380.65

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Solution

The fourth proportional to 803,418.78, 1,205,109.79 and 204,380.65 is: 306,566.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,418.78 : 1,205,109.79 = 204,380.65 : x
  2. Step 2: Convert to fraction form
    803,418.78/1,205,109.79 = 204,380.65/x
  3. Step 3: Cross multiply
    803,418.78x = 1,205,109.79 × 204,380.65
  4. Step 4: Simplify right side
    803,418.78x = 246,301,122,201.56
  5. Step 5: Solve for x
    x = 246,301,122,201.56/803,418.78
  6. Step 6: Final answer
    x = 306,566.30

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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.