Home / 422,478-939,408

Finding the Third Proportional to 422,478 and 939,408

Calculator

Solution

The third proportional to 422,478 and 939,408 is: 2,088,836.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,478 : 939,408 = 939,408 : x
  2. Step 2: Convert to fraction form
    422,478/939,408 = 939,408/x
  3. Step 3: Cross multiply
    422,478x = 939,408 × 939,408
  4. Step 4: Simplify right side
    422,478x = 882,487,390,464
  5. Step 5: Solve for x
    x = 882,487,390,464/422,478
  6. Step 6: Final answer
    x = 2,088,836.32

Related Problems

Find third proportional to 211,239 and 469,704
Half scale
Find third proportional to 844,956 and 1,878,816
Double scale
Find third proportional to 422,480 and 939,412
Similar ratio
Find third proportional to 633,717 and 1,409,112
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.