Home / 313,236-687,706

Finding the Third Proportional to 313,236 and 687,706

Calculator

Solution

The third proportional to 313,236 and 687,706 is: 1,509,850.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,236 : 687,706 = 687,706 : x
  2. Step 2: Convert to fraction form
    313,236/687,706 = 687,706/x
  3. Step 3: Cross multiply
    313,236x = 687,706 × 687,706
  4. Step 4: Simplify right side
    313,236x = 472,939,542,436
  5. Step 5: Solve for x
    x = 472,939,542,436/313,236
  6. Step 6: Final answer
    x = 1,509,850.54

Related Problems

Find third proportional to 156,618 and 343,853
Half scale
Find third proportional to 626,472 and 1,375,412
Double scale
Find third proportional to 313,238 and 687,710
Similar ratio
Find third proportional to 469,854 and 1,031,559
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.