Home / 1,990,747.28-2,747,231.16-1,131,309.20

Finding the Fourth Proportional to 1,990,747.28, 2,747,231.16 and 1,131,309.20

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Solution

The fourth proportional to 1,990,747.28, 2,747,231.16 and 1,131,309.20 is: 1,561,206.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,747.28 : 2,747,231.16 = 1,131,309.20 : x
  2. Step 2: Convert to fraction form
    1,990,747.28/2,747,231.16 = 1,131,309.20/x
  3. Step 3: Cross multiply
    1,990,747.28x = 2,747,231.16 × 1,131,309.20
  4. Step 4: Simplify right side
    1,990,747.28x = 3,107,967,885,834.67
  5. Step 5: Solve for x
    x = 3,107,967,885,834.67/1,990,747.28
  6. Step 6: Final answer
    x = 1,561,206.65

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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.