Home / 301,907-639,778

Finding the Third Proportional to 301,907 and 639,778

Calculator

Solution

The third proportional to 301,907 and 639,778 is: 1,355,768.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,907 : 639,778 = 639,778 : x
  2. Step 2: Convert to fraction form
    301,907/639,778 = 639,778/x
  3. Step 3: Cross multiply
    301,907x = 639,778 × 639,778
  4. Step 4: Simplify right side
    301,907x = 409,315,889,284
  5. Step 5: Solve for x
    x = 409,315,889,284/301,907
  6. Step 6: Final answer
    x = 1,355,768.13

Related Problems

Find third proportional to 150,953.50 and 319,889
Half scale
Find third proportional to 603,814 and 1,279,556
Double scale
Find third proportional to 301,909 and 639,782
Similar ratio
Find third proportional to 452,860.50 and 959,667
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.