Home / 299,469-438,055

Finding the Third Proportional to 299,469 and 438,055

Calculator

Solution

The third proportional to 299,469 and 438,055 is: 640,774.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,469 : 438,055 = 438,055 : x
  2. Step 2: Convert to fraction form
    299,469/438,055 = 438,055/x
  3. Step 3: Cross multiply
    299,469x = 438,055 × 438,055
  4. Step 4: Simplify right side
    299,469x = 191,892,183,025
  5. Step 5: Solve for x
    x = 191,892,183,025/299,469
  6. Step 6: Final answer
    x = 640,774.78

Related Problems

Find third proportional to 149,734.50 and 219,027.50
Half scale
Find third proportional to 598,938 and 876,110
Double scale
Find third proportional to 299,471 and 438,058
Similar ratio
Find third proportional to 449,203.50 and 657,082.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.