Home / 199,186-428,580

Finding the Third Proportional to 199,186 and 428,580

Calculator

Solution

The third proportional to 199,186 and 428,580 is: 922,157.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,186 : 428,580 = 428,580 : x
  2. Step 2: Convert to fraction form
    199,186/428,580 = 428,580/x
  3. Step 3: Cross multiply
    199,186x = 428,580 × 428,580
  4. Step 4: Simplify right side
    199,186x = 183,680,816,400
  5. Step 5: Solve for x
    x = 183,680,816,400/199,186
  6. Step 6: Final answer
    x = 922,157.26

Related Problems

Find third proportional to 99,593 and 214,290
Half scale
Find third proportional to 398,372 and 857,160
Double scale
Find third proportional to 199,188 and 428,584
Similar ratio
Find third proportional to 298,779 and 642,870
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.