Home / 394,476-640,896

Finding the Third Proportional to 394,476 and 640,896

Calculator

Solution

The third proportional to 394,476 and 640,896 is: 1,041,248.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,476 : 640,896 = 640,896 : x
  2. Step 2: Convert to fraction form
    394,476/640,896 = 640,896/x
  3. Step 3: Cross multiply
    394,476x = 640,896 × 640,896
  4. Step 4: Simplify right side
    394,476x = 410,747,682,816
  5. Step 5: Solve for x
    x = 410,747,682,816/394,476
  6. Step 6: Final answer
    x = 1,041,248.85

Related Problems

Find third proportional to 197,238 and 320,448
Half scale
Find third proportional to 788,952 and 1,281,792
Double scale
Find third proportional to 394,478 and 640,899
Similar ratio
Find third proportional to 591,714 and 961,344
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.