Home / 321,483-687,252

Finding the Third Proportional to 321,483 and 687,252

Calculator

Solution

The third proportional to 321,483 and 687,252 is: 1,469,176.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,483 : 687,252 = 687,252 : x
  2. Step 2: Convert to fraction form
    321,483/687,252 = 687,252/x
  3. Step 3: Cross multiply
    321,483x = 687,252 × 687,252
  4. Step 4: Simplify right side
    321,483x = 472,315,311,504
  5. Step 5: Solve for x
    x = 472,315,311,504/321,483
  6. Step 6: Final answer
    x = 1,469,176.63

Related Problems

Find third proportional to 160,741.50 and 343,626
Half scale
Find third proportional to 642,966 and 1,374,504
Double scale
Find third proportional to 321,485 and 687,256
Similar ratio
Find third proportional to 482,224.50 and 1,030,878
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.