Home / 386,880-547,920

Finding the Third Proportional to 386,880 and 547,920

Calculator

Solution

The third proportional to 386,880 and 547,920 is: 775,993.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,880 : 547,920 = 547,920 : x
  2. Step 2: Convert to fraction form
    386,880/547,920 = 547,920/x
  3. Step 3: Cross multiply
    386,880x = 547,920 × 547,920
  4. Step 4: Simplify right side
    386,880x = 300,216,326,400
  5. Step 5: Solve for x
    x = 300,216,326,400/386,880
  6. Step 6: Final answer
    x = 775,993.40

Related Problems

Find third proportional to 193,440 and 273,960
Half scale
Find third proportional to 773,760 and 1,095,840
Double scale
Find third proportional to 386,882 and 547,923
Similar ratio
Find third proportional to 580,320 and 821,880
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.