Home / 270,928-421,902

Finding the Third Proportional to 270,928 and 421,902

Calculator

Solution

The third proportional to 270,928 and 421,902 is: 657,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,928 : 421,902 = 421,902 : x
  2. Step 2: Convert to fraction form
    270,928/421,902 = 421,902/x
  3. Step 3: Cross multiply
    270,928x = 421,902 × 421,902
  4. Step 4: Simplify right side
    270,928x = 178,001,297,604
  5. Step 5: Solve for x
    x = 178,001,297,604/270,928
  6. Step 6: Final answer
    x = 657,005.91

Related Problems

Find third proportional to 135,464 and 210,951
Half scale
Find third proportional to 541,856 and 843,804
Double scale
Find third proportional to 270,930 and 421,905
Similar ratio
Find third proportional to 406,392 and 632,853
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.