Home / 323,190-687,240

Finding the Third Proportional to 323,190 and 687,240

Calculator

Solution

The third proportional to 323,190 and 687,240 is: 1,461,365.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,190 : 687,240 = 687,240 : x
  2. Step 2: Convert to fraction form
    323,190/687,240 = 687,240/x
  3. Step 3: Cross multiply
    323,190x = 687,240 × 687,240
  4. Step 4: Simplify right side
    323,190x = 472,298,817,600
  5. Step 5: Solve for x
    x = 472,298,817,600/323,190
  6. Step 6: Final answer
    x = 1,461,365.81

Related Problems

Find third proportional to 161,595 and 343,620
Half scale
Find third proportional to 646,380 and 1,374,480
Double scale
Find third proportional to 323,192 and 687,244
Similar ratio
Find third proportional to 484,785 and 1,030,860
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.