Home / 427,258-664,215

Finding the Third Proportional to 427,258 and 664,215

Calculator

Solution

The third proportional to 427,258 and 664,215 is: 1,032,588.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,258 : 664,215 = 664,215 : x
  2. Step 2: Convert to fraction form
    427,258/664,215 = 664,215/x
  3. Step 3: Cross multiply
    427,258x = 664,215 × 664,215
  4. Step 4: Simplify right side
    427,258x = 441,181,566,225
  5. Step 5: Solve for x
    x = 441,181,566,225/427,258
  6. Step 6: Final answer
    x = 1,032,588.19

Related Problems

Find third proportional to 213,629 and 332,107.50
Half scale
Find third proportional to 854,516 and 1,328,430
Double scale
Find third proportional to 427,260 and 664,218
Similar ratio
Find third proportional to 640,887 and 996,322.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.