Home / 321,167-691,663

Finding the Third Proportional to 321,167 and 691,663

Calculator

Solution

The third proportional to 321,167 and 691,663 is: 1,489,560.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,167 : 691,663 = 691,663 : x
  2. Step 2: Convert to fraction form
    321,167/691,663 = 691,663/x
  3. Step 3: Cross multiply
    321,167x = 691,663 × 691,663
  4. Step 4: Simplify right side
    321,167x = 478,397,705,569
  5. Step 5: Solve for x
    x = 478,397,705,569/321,167
  6. Step 6: Final answer
    x = 1,489,560.59

Related Problems

Find third proportional to 160,583.50 and 345,831.50
Half scale
Find third proportional to 642,334 and 1,383,326
Double scale
Find third proportional to 321,169 and 691,667
Similar ratio
Find third proportional to 481,750.50 and 1,037,494.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.