Home / 387,020-821,062

Finding the Third Proportional to 387,020 and 821,062

Calculator

Solution

The third proportional to 387,020 and 821,062 is: 1,741,881.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,020 : 821,062 = 821,062 : x
  2. Step 2: Convert to fraction form
    387,020/821,062 = 821,062/x
  3. Step 3: Cross multiply
    387,020x = 821,062 × 821,062
  4. Step 4: Simplify right side
    387,020x = 674,142,807,844
  5. Step 5: Solve for x
    x = 674,142,807,844/387,020
  6. Step 6: Final answer
    x = 1,741,881.06

Related Problems

Find third proportional to 193,510 and 410,531
Half scale
Find third proportional to 774,040 and 1,642,124
Double scale
Find third proportional to 387,022 and 821,066
Similar ratio
Find third proportional to 580,530 and 1,231,593
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.