Home / 1,040,643.80-1,561,234.34-320,969.33

Finding the Fourth Proportional to 1,040,643.80, 1,561,234.34 and 320,969.33

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Solution

The fourth proportional to 1,040,643.80, 1,561,234.34 and 320,969.33 is: 481,536.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,643.80 : 1,561,234.34 = 320,969.33 : x
  2. Step 2: Convert to fraction form
    1,040,643.80/1,561,234.34 = 320,969.33/x
  3. Step 3: Cross multiply
    1,040,643.80x = 1,561,234.34 × 320,969.33
  4. Step 4: Simplify right side
    1,040,643.80x = 501,108,333,079.04
  5. Step 5: Solve for x
    x = 501,108,333,079.04/1,040,643.80
  6. Step 6: Final answer
    x = 481,536.85

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Double scale
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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.