Home / 1,231,029.80-1,699,104.48-721,896.20

Finding the Fourth Proportional to 1,231,029.80, 1,699,104.48 and 721,896.20

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Solution

The fourth proportional to 1,231,029.80, 1,699,104.48 and 721,896.20 is: 996,382.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,029.80 : 1,699,104.48 = 721,896.20 : x
  2. Step 2: Convert to fraction form
    1,231,029.80/1,699,104.48 = 721,896.20/x
  3. Step 3: Cross multiply
    1,231,029.80x = 1,699,104.48 × 721,896.20
  4. Step 4: Simplify right side
    1,231,029.80x = 1,226,577,067,514.98
  5. Step 5: Solve for x
    x = 1,226,577,067,514.98/1,231,029.80
  6. Step 6: Final answer
    x = 996,382.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.