Home / 180,386-391,868

Finding the Third Proportional to 180,386 and 391,868

Calculator

Solution

The third proportional to 180,386 and 391,868 is: 851,288.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,386 : 391,868 = 391,868 : x
  2. Step 2: Convert to fraction form
    180,386/391,868 = 391,868/x
  3. Step 3: Cross multiply
    180,386x = 391,868 × 391,868
  4. Step 4: Simplify right side
    180,386x = 153,560,529,424
  5. Step 5: Solve for x
    x = 153,560,529,424/180,386
  6. Step 6: Final answer
    x = 851,288.51

Related Problems

Find third proportional to 90,193 and 195,934
Half scale
Find third proportional to 360,772 and 783,736
Double scale
Find third proportional to 180,388 and 391,872
Similar ratio
Find third proportional to 270,579 and 587,802
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.