Home / 396,144-855,412

Finding the Third Proportional to 396,144 and 855,412

Calculator

Solution

The third proportional to 396,144 and 855,412 is: 1,847,130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,144 : 855,412 = 855,412 : x
  2. Step 2: Convert to fraction form
    396,144/855,412 = 855,412/x
  3. Step 3: Cross multiply
    396,144x = 855,412 × 855,412
  4. Step 4: Simplify right side
    396,144x = 731,729,689,744
  5. Step 5: Solve for x
    x = 731,729,689,744/396,144
  6. Step 6: Final answer
    x = 1,847,130.56

Related Problems

Find third proportional to 198,072 and 427,706
Half scale
Find third proportional to 792,288 and 1,710,824
Double scale
Find third proportional to 396,146 and 855,416
Similar ratio
Find third proportional to 594,216 and 1,283,118
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.