Home / 299,376-645,408

Finding the Third Proportional to 299,376 and 645,408

Calculator

Solution

The third proportional to 299,376 and 645,408 is: 1,391,399.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,376 : 645,408 = 645,408 : x
  2. Step 2: Convert to fraction form
    299,376/645,408 = 645,408/x
  3. Step 3: Cross multiply
    299,376x = 645,408 × 645,408
  4. Step 4: Simplify right side
    299,376x = 416,551,486,464
  5. Step 5: Solve for x
    x = 416,551,486,464/299,376
  6. Step 6: Final answer
    x = 1,391,399.06

Related Problems

Find third proportional to 149,688 and 322,704
Half scale
Find third proportional to 598,752 and 1,290,816
Double scale
Find third proportional to 299,378 and 645,412
Similar ratio
Find third proportional to 449,064 and 968,112
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.