Home / 218,128-461,406

Finding the Third Proportional to 218,128 and 461,406

Calculator

Solution

The third proportional to 218,128 and 461,406 is: 976,011.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,128 : 461,406 = 461,406 : x
  2. Step 2: Convert to fraction form
    218,128/461,406 = 461,406/x
  3. Step 3: Cross multiply
    218,128x = 461,406 × 461,406
  4. Step 4: Simplify right side
    218,128x = 212,895,496,836
  5. Step 5: Solve for x
    x = 212,895,496,836/218,128
  6. Step 6: Final answer
    x = 976,011.78

Related Problems

Find third proportional to 109,064 and 230,703
Half scale
Find third proportional to 436,256 and 922,812
Double scale
Find third proportional to 218,130 and 461,410
Similar ratio
Find third proportional to 327,192 and 692,109
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.