Home / 445,516-643,694

Finding the Third Proportional to 445,516 and 643,694

Calculator

Solution

The third proportional to 445,516 and 643,694 is: 930,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,516 : 643,694 = 643,694 : x
  2. Step 2: Convert to fraction form
    445,516/643,694 = 643,694/x
  3. Step 3: Cross multiply
    445,516x = 643,694 × 643,694
  4. Step 4: Simplify right side
    445,516x = 414,341,965,636
  5. Step 5: Solve for x
    x = 414,341,965,636/445,516
  6. Step 6: Final answer
    x = 930,027.13

Related Problems

Find third proportional to 222,758 and 321,847
Half scale
Find third proportional to 891,032 and 1,287,388
Double scale
Find third proportional to 445,518 and 643,697
Similar ratio
Find third proportional to 668,274 and 965,541
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.