Home / 426.38-870.75

Finding the Third Proportional to 426.38 and 870.75

Calculator

Solution

The third proportional to 426.38 and 870.75 is: 1,778.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.38 : 870.75 = 870.75 : x
  2. Step 2: Convert to fraction form
    426.38/870.75 = 870.75/x
  3. Step 3: Cross multiply
    426.38x = 870.75 × 870.75
  4. Step 4: Simplify right side
    426.38x = 758,205.56
  5. Step 5: Solve for x
    x = 758,205.56/426.38
  6. Step 6: Final answer
    x = 1,778.26

Related Problems

Find third proportional to 213.19 and 435.38
Half scale
Find third proportional to 852.75 and 1,741.50
Double scale
Find third proportional to 428 and 875
Similar ratio
Find third proportional to 639.56 and 1,306.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.