Home / 408,874-620,691

Finding the Third Proportional to 408,874 and 620,691

Calculator

Solution

The third proportional to 408,874 and 620,691 is: 942,239.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,874 : 620,691 = 620,691 : x
  2. Step 2: Convert to fraction form
    408,874/620,691 = 620,691/x
  3. Step 3: Cross multiply
    408,874x = 620,691 × 620,691
  4. Step 4: Simplify right side
    408,874x = 385,257,317,481
  5. Step 5: Solve for x
    x = 385,257,317,481/408,874
  6. Step 6: Final answer
    x = 942,239.71

Related Problems

Find third proportional to 204,437 and 310,345.50
Half scale
Find third proportional to 817,748 and 1,241,382
Double scale
Find third proportional to 408,876 and 620,694
Similar ratio
Find third proportional to 613,311 and 931,036.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.