Home / 289,992-638,848

Finding the Third Proportional to 289,992 and 638,848

Calculator

Solution

The third proportional to 289,992 and 638,848 is: 1,407,372.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,992 : 638,848 = 638,848 : x
  2. Step 2: Convert to fraction form
    289,992/638,848 = 638,848/x
  3. Step 3: Cross multiply
    289,992x = 638,848 × 638,848
  4. Step 4: Simplify right side
    289,992x = 408,126,767,104
  5. Step 5: Solve for x
    x = 408,126,767,104/289,992
  6. Step 6: Final answer
    x = 1,407,372.50

Related Problems

Find third proportional to 144,996 and 319,424
Half scale
Find third proportional to 579,984 and 1,277,696
Double scale
Find third proportional to 289,994 and 638,852
Similar ratio
Find third proportional to 434,988 and 958,272
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.