Home / 661,290-989,375

Finding the Third Proportional to 661,290 and 989,375

Calculator

Solution

The third proportional to 661,290 and 989,375 is: 1,480,232.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,290 : 989,375 = 989,375 : x
  2. Step 2: Convert to fraction form
    661,290/989,375 = 989,375/x
  3. Step 3: Cross multiply
    661,290x = 989,375 × 989,375
  4. Step 4: Simplify right side
    661,290x = 978,862,890,625
  5. Step 5: Solve for x
    x = 978,862,890,625/661,290
  6. Step 6: Final answer
    x = 1,480,232.41

Related Problems

Find third proportional to 330,645 and 494,687.50
Half scale
Find third proportional to 1,322,580 and 1,978,750
Double scale
Find third proportional to 661,292 and 989,378
Similar ratio
Find third proportional to 991,935 and 1,484,062.50
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.