Home / 190,690-418,720

Finding the Third Proportional to 190,690 and 418,720

Calculator

Solution

The third proportional to 190,690 and 418,720 is: 919,431.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,690 : 418,720 = 418,720 : x
  2. Step 2: Convert to fraction form
    190,690/418,720 = 418,720/x
  3. Step 3: Cross multiply
    190,690x = 418,720 × 418,720
  4. Step 4: Simplify right side
    190,690x = 175,326,438,400
  5. Step 5: Solve for x
    x = 175,326,438,400/190,690
  6. Step 6: Final answer
    x = 919,431.74

Related Problems

Find third proportional to 95,345 and 209,360
Half scale
Find third proportional to 381,380 and 837,440
Double scale
Find third proportional to 190,692 and 418,724
Similar ratio
Find third proportional to 286,035 and 628,080
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.