Home / 643,632-1,372,728

Finding the Third Proportional to 643,632 and 1,372,728

Calculator

Solution

The third proportional to 643,632 and 1,372,728 is: 2,927,732.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,632 : 1,372,728 = 1,372,728 : x
  2. Step 2: Convert to fraction form
    643,632/1,372,728 = 1,372,728/x
  3. Step 3: Cross multiply
    643,632x = 1,372,728 × 1,372,728
  4. Step 4: Simplify right side
    643,632x = 1,884,382,161,984
  5. Step 5: Solve for x
    x = 1,884,382,161,984/643,632
  6. Step 6: Final answer
    x = 2,927,732.25

Related Problems

Find third proportional to 321,816 and 686,364
Half scale
Find third proportional to 1,287,264 and 2,745,456
Double scale
Find third proportional to 643,634 and 1,372,732
Similar ratio
Find third proportional to 965,448 and 2,059,092
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.