Home / 189,640-407,395

Finding the Third Proportional to 189,640 and 407,395

Calculator

Solution

The third proportional to 189,640 and 407,395 is: 875,188.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,640 : 407,395 = 407,395 : x
  2. Step 2: Convert to fraction form
    189,640/407,395 = 407,395/x
  3. Step 3: Cross multiply
    189,640x = 407,395 × 407,395
  4. Step 4: Simplify right side
    189,640x = 165,970,686,025
  5. Step 5: Solve for x
    x = 165,970,686,025/189,640
  6. Step 6: Final answer
    x = 875,188.18

Related Problems

Find third proportional to 94,820 and 203,697.50
Half scale
Find third proportional to 379,280 and 814,790
Double scale
Find third proportional to 189,642 and 407,399
Similar ratio
Find third proportional to 284,460 and 611,092.50
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.