Home / 419,570-645,282

Finding the Third Proportional to 419,570 and 645,282

Calculator

Solution

The third proportional to 419,570 and 645,282 is: 992,418.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,570 : 645,282 = 645,282 : x
  2. Step 2: Convert to fraction form
    419,570/645,282 = 645,282/x
  3. Step 3: Cross multiply
    419,570x = 645,282 × 645,282
  4. Step 4: Simplify right side
    419,570x = 416,388,859,524
  5. Step 5: Solve for x
    x = 416,388,859,524/419,570
  6. Step 6: Final answer
    x = 992,418.09

Related Problems

Find third proportional to 209,785 and 322,641
Half scale
Find third proportional to 839,140 and 1,290,564
Double scale
Find third proportional to 419,572 and 645,285
Similar ratio
Find third proportional to 629,355 and 967,923
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.