Home / 1,040,221.68-1,560,503.29-320,563.51

Finding the Fourth Proportional to 1,040,221.68, 1,560,503.29 and 320,563.51

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Solution

The fourth proportional to 1,040,221.68, 1,560,503.29 and 320,563.51 is: 480,897.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,221.68 : 1,560,503.29 = 320,563.51 : x
  2. Step 2: Convert to fraction form
    1,040,221.68/1,560,503.29 = 320,563.51/x
  3. Step 3: Cross multiply
    1,040,221.68x = 1,560,503.29 × 320,563.51
  4. Step 4: Simplify right side
    1,040,221.68x = 500,240,412,008.95
  5. Step 5: Solve for x
    x = 500,240,412,008.95/1,040,221.68
  6. Step 6: Final answer
    x = 480,897.89

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Double scale
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1.5x scale

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.