Home / 1,086,714.80-1,629,999.30-287,979.20

Finding the Fourth Proportional to 1,086,714.80, 1,629,999.30 and 287,979.20

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Solution

The fourth proportional to 1,086,714.80, 1,629,999.30 and 287,979.20 is: 431,949.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,714.80 : 1,629,999.30 = 287,979.20 : x
  2. Step 2: Convert to fraction form
    1,086,714.80/1,629,999.30 = 287,979.20/x
  3. Step 3: Cross multiply
    1,086,714.80x = 1,629,999.30 × 287,979.20
  4. Step 4: Simplify right side
    1,086,714.80x = 469,405,894,414.56
  5. Step 5: Solve for x
    x = 469,405,894,414.56/1,086,714.80
  6. Step 6: Final answer
    x = 431,949.48

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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.