Home / 425,230-639,768

Finding the Third Proportional to 425,230 and 639,768

Calculator

Solution

The third proportional to 425,230 and 639,768 is: 962,545.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,230 : 639,768 = 639,768 : x
  2. Step 2: Convert to fraction form
    425,230/639,768 = 639,768/x
  3. Step 3: Cross multiply
    425,230x = 639,768 × 639,768
  4. Step 4: Simplify right side
    425,230x = 409,303,093,824
  5. Step 5: Solve for x
    x = 409,303,093,824/425,230
  6. Step 6: Final answer
    x = 962,545.20

Related Problems

Find third proportional to 212,615 and 319,884
Half scale
Find third proportional to 850,460 and 1,279,536
Double scale
Find third proportional to 425,232 and 639,771
Similar ratio
Find third proportional to 637,845 and 959,652
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.