Home / 275,550-421,506

Finding the Third Proportional to 275,550 and 421,506

Calculator

Solution

The third proportional to 275,550 and 421,506 is: 644,773.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,550 : 421,506 = 421,506 : x
  2. Step 2: Convert to fraction form
    275,550/421,506 = 421,506/x
  3. Step 3: Cross multiply
    275,550x = 421,506 × 421,506
  4. Step 4: Simplify right side
    275,550x = 177,667,308,036
  5. Step 5: Solve for x
    x = 177,667,308,036/275,550
  6. Step 6: Final answer
    x = 644,773.39

Related Problems

Find third proportional to 137,775 and 210,753
Half scale
Find third proportional to 551,100 and 843,012
Double scale
Find third proportional to 275,552 and 421,509
Similar ratio
Find third proportional to 413,325 and 632,259
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.