Home / 312,448-681,408

Finding the Third Proportional to 312,448 and 681,408

Calculator

Solution

The third proportional to 312,448 and 681,408 is: 1,486,061.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,448 : 681,408 = 681,408 : x
  2. Step 2: Convert to fraction form
    312,448/681,408 = 681,408/x
  3. Step 3: Cross multiply
    312,448x = 681,408 × 681,408
  4. Step 4: Simplify right side
    312,448x = 464,316,862,464
  5. Step 5: Solve for x
    x = 464,316,862,464/312,448
  6. Step 6: Final answer
    x = 1,486,061.24

Related Problems

Find third proportional to 156,224 and 340,704
Half scale
Find third proportional to 624,896 and 1,362,816
Double scale
Find third proportional to 312,450 and 681,412
Similar ratio
Find third proportional to 468,672 and 1,022,112
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.