Home / 275,938-423,020

Finding the Third Proportional to 275,938 and 423,020

Calculator

Solution

The third proportional to 275,938 and 423,020 is: 648,500.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,938 : 423,020 = 423,020 : x
  2. Step 2: Convert to fraction form
    275,938/423,020 = 423,020/x
  3. Step 3: Cross multiply
    275,938x = 423,020 × 423,020
  4. Step 4: Simplify right side
    275,938x = 178,945,920,400
  5. Step 5: Solve for x
    x = 178,945,920,400/275,938
  6. Step 6: Final answer
    x = 648,500.46

Related Problems

Find third proportional to 137,969 and 211,510
Half scale
Find third proportional to 551,876 and 846,040
Double scale
Find third proportional to 275,940 and 423,023
Similar ratio
Find third proportional to 413,907 and 634,530
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.