Home / 405,144-836,208

Finding the Third Proportional to 405,144 and 836,208

Calculator

Solution

The third proportional to 405,144 and 836,208 is: 1,725,914.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,144 : 836,208 = 836,208 : x
  2. Step 2: Convert to fraction form
    405,144/836,208 = 836,208/x
  3. Step 3: Cross multiply
    405,144x = 836,208 × 836,208
  4. Step 4: Simplify right side
    405,144x = 699,243,819,264
  5. Step 5: Solve for x
    x = 699,243,819,264/405,144
  6. Step 6: Final answer
    x = 1,725,914.29

Related Problems

Find third proportional to 202,572 and 418,104
Half scale
Find third proportional to 810,288 and 1,672,416
Double scale
Find third proportional to 405,146 and 836,212
Similar ratio
Find third proportional to 607,716 and 1,254,312
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.