Home / 391,880-800,356

Finding the Third Proportional to 391,880 and 800,356

Calculator

Solution

The third proportional to 391,880 and 800,356 is: 1,634,606.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,880 : 800,356 = 800,356 : x
  2. Step 2: Convert to fraction form
    391,880/800,356 = 800,356/x
  3. Step 3: Cross multiply
    391,880x = 800,356 × 800,356
  4. Step 4: Simplify right side
    391,880x = 640,569,726,736
  5. Step 5: Solve for x
    x = 640,569,726,736/391,880
  6. Step 6: Final answer
    x = 1,634,606.84

Related Problems

Find third proportional to 195,940 and 400,178
Half scale
Find third proportional to 783,760 and 1,600,712
Double scale
Find third proportional to 391,882 and 800,360
Similar ratio
Find third proportional to 587,820 and 1,200,534
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.