Home / 640,132-1,379,408

Finding the Third Proportional to 640,132 and 1,379,408

Calculator

Solution

The third proportional to 640,132 and 1,379,408 is: 2,972,459.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,132 : 1,379,408 = 1,379,408 : x
  2. Step 2: Convert to fraction form
    640,132/1,379,408 = 1,379,408/x
  3. Step 3: Cross multiply
    640,132x = 1,379,408 × 1,379,408
  4. Step 4: Simplify right side
    640,132x = 1,902,766,430,464
  5. Step 5: Solve for x
    x = 1,902,766,430,464/640,132
  6. Step 6: Final answer
    x = 2,972,459.48

Related Problems

Find third proportional to 320,066 and 689,704
Half scale
Find third proportional to 1,280,264 and 2,758,816
Double scale
Find third proportional to 640,134 and 1,379,412
Similar ratio
Find third proportional to 960,198 and 2,069,112
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.