Home / 275,868-421,802

Finding the Third Proportional to 275,868 and 421,802

Calculator

Solution

The third proportional to 275,868 and 421,802 is: 644,935.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,868 : 421,802 = 421,802 : x
  2. Step 2: Convert to fraction form
    275,868/421,802 = 421,802/x
  3. Step 3: Cross multiply
    275,868x = 421,802 × 421,802
  4. Step 4: Simplify right side
    275,868x = 177,916,927,204
  5. Step 5: Solve for x
    x = 177,916,927,204/275,868
  6. Step 6: Final answer
    x = 644,935.00

Related Problems

Find third proportional to 137,934 and 210,901
Half scale
Find third proportional to 551,736 and 843,604
Double scale
Find third proportional to 275,870 and 421,805
Similar ratio
Find third proportional to 413,802 and 632,703
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.