Home / 198,684-387,378

Finding the Third Proportional to 198,684 and 387,378

Calculator

Solution

The third proportional to 198,684 and 387,378 is: 755,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,684 : 387,378 = 387,378 : x
  2. Step 2: Convert to fraction form
    198,684/387,378 = 387,378/x
  3. Step 3: Cross multiply
    198,684x = 387,378 × 387,378
  4. Step 4: Simplify right side
    198,684x = 150,061,714,884
  5. Step 5: Solve for x
    x = 150,061,714,884/198,684
  6. Step 6: Final answer
    x = 755,278.31

Related Problems

Find third proportional to 99,342 and 193,689
Half scale
Find third proportional to 397,368 and 774,756
Double scale
Find third proportional to 198,686 and 387,382
Similar ratio
Find third proportional to 298,026 and 581,067
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.