Home / 180,782-389,512

Finding the Third Proportional to 180,782 and 389,512

Calculator

Solution

The third proportional to 180,782 and 389,512 is: 839,240.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,782 : 389,512 = 389,512 : x
  2. Step 2: Convert to fraction form
    180,782/389,512 = 389,512/x
  3. Step 3: Cross multiply
    180,782x = 389,512 × 389,512
  4. Step 4: Simplify right side
    180,782x = 151,719,598,144
  5. Step 5: Solve for x
    x = 151,719,598,144/180,782
  6. Step 6: Final answer
    x = 839,240.62

Related Problems

Find third proportional to 90,391 and 194,756
Half scale
Find third proportional to 361,564 and 779,024
Double scale
Find third proportional to 180,784 and 389,516
Similar ratio
Find third proportional to 271,173 and 584,268
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.