Home / 291,210-445,857

Finding the Third Proportional to 291,210 and 445,857

Calculator

Solution

The third proportional to 291,210 and 445,857 is: 682,629.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,210 : 445,857 = 445,857 : x
  2. Step 2: Convert to fraction form
    291,210/445,857 = 445,857/x
  3. Step 3: Cross multiply
    291,210x = 445,857 × 445,857
  4. Step 4: Simplify right side
    291,210x = 198,788,464,449
  5. Step 5: Solve for x
    x = 198,788,464,449/291,210
  6. Step 6: Final answer
    x = 682,629.25

Related Problems

Find third proportional to 145,605 and 222,928.50
Half scale
Find third proportional to 582,420 and 891,714
Double scale
Find third proportional to 291,212 and 445,860
Similar ratio
Find third proportional to 436,815 and 668,785.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.