Home / 381,310-821,719

Finding the Third Proportional to 381,310 and 821,719

Calculator

Solution

The third proportional to 381,310 and 821,719 is: 1,770,795.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,310 : 821,719 = 821,719 : x
  2. Step 2: Convert to fraction form
    381,310/821,719 = 821,719/x
  3. Step 3: Cross multiply
    381,310x = 821,719 × 821,719
  4. Step 4: Simplify right side
    381,310x = 675,222,114,961
  5. Step 5: Solve for x
    x = 675,222,114,961/381,310
  6. Step 6: Final answer
    x = 1,770,795.72

Related Problems

Find third proportional to 190,655 and 410,859.50
Half scale
Find third proportional to 762,620 and 1,643,438
Double scale
Find third proportional to 381,312 and 821,723
Similar ratio
Find third proportional to 571,965 and 1,232,578.50
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.