Home / 394,373-643,908

Finding the Third Proportional to 394,373 and 643,908

Calculator

Solution

The third proportional to 394,373 and 643,908 is: 1,051,333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,373 : 643,908 = 643,908 : x
  2. Step 2: Convert to fraction form
    394,373/643,908 = 643,908/x
  3. Step 3: Cross multiply
    394,373x = 643,908 × 643,908
  4. Step 4: Simplify right side
    394,373x = 414,617,512,464
  5. Step 5: Solve for x
    x = 414,617,512,464/394,373
  6. Step 6: Final answer
    x = 1,051,333.41

Related Problems

Find third proportional to 197,186.50 and 321,954
Half scale
Find third proportional to 788,746 and 1,287,816
Double scale
Find third proportional to 394,375 and 643,911
Similar ratio
Find third proportional to 591,559.50 and 965,862
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.