Home / 198,458-407,446

Finding the Third Proportional to 198,458 and 407,446

Calculator

Solution

The third proportional to 198,458 and 407,446 is: 836,510.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,458 : 407,446 = 407,446 : x
  2. Step 2: Convert to fraction form
    198,458/407,446 = 407,446/x
  3. Step 3: Cross multiply
    198,458x = 407,446 × 407,446
  4. Step 4: Simplify right side
    198,458x = 166,012,242,916
  5. Step 5: Solve for x
    x = 166,012,242,916/198,458
  6. Step 6: Final answer
    x = 836,510.71

Related Problems

Find third proportional to 99,229 and 203,723
Half scale
Find third proportional to 396,916 and 814,892
Double scale
Find third proportional to 198,460 and 407,450
Similar ratio
Find third proportional to 297,687 and 611,169
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.