Home / 1,231,021.80-1,699,093.44-721,888.20

Finding the Fourth Proportional to 1,231,021.80, 1,699,093.44 and 721,888.20

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Solution

The fourth proportional to 1,231,021.80, 1,699,093.44 and 721,888.20 is: 996,371.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,021.80 : 1,699,093.44 = 721,888.20 : x
  2. Step 2: Convert to fraction form
    1,231,021.80/1,699,093.44 = 721,888.20/x
  3. Step 3: Cross multiply
    1,231,021.80x = 1,699,093.44 × 721,888.20
  4. Step 4: Simplify right side
    1,231,021.80x = 1,226,555,505,033.41
  5. Step 5: Solve for x
    x = 1,226,555,505,033.41/1,231,021.80
  6. Step 6: Final answer
    x = 996,371.88

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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.