Home / 320,062-689,696

Finding the Third Proportional to 320,062 and 689,696

Calculator

Solution

The third proportional to 320,062 and 689,696 is: 1,486,213.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,062 : 689,696 = 689,696 : x
  2. Step 2: Convert to fraction form
    320,062/689,696 = 689,696/x
  3. Step 3: Cross multiply
    320,062x = 689,696 × 689,696
  4. Step 4: Simplify right side
    320,062x = 475,680,572,416
  5. Step 5: Solve for x
    x = 475,680,572,416/320,062
  6. Step 6: Final answer
    x = 1,486,213.83

Related Problems

Find third proportional to 160,031 and 344,848
Half scale
Find third proportional to 640,124 and 1,379,392
Double scale
Find third proportional to 320,064 and 689,700
Similar ratio
Find third proportional to 480,093 and 1,034,544
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.