Home / 438,939-641,682

Finding the Third Proportional to 438,939 and 641,682

Calculator

Solution

The third proportional to 438,939 and 641,682 is: 938,070.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,939 : 641,682 = 641,682 : x
  2. Step 2: Convert to fraction form
    438,939/641,682 = 641,682/x
  3. Step 3: Cross multiply
    438,939x = 641,682 × 641,682
  4. Step 4: Simplify right side
    438,939x = 411,755,789,124
  5. Step 5: Solve for x
    x = 411,755,789,124/438,939
  6. Step 6: Final answer
    x = 938,070.64

Related Problems

Find third proportional to 219,469.50 and 320,841
Half scale
Find third proportional to 877,878 and 1,283,364
Double scale
Find third proportional to 438,941 and 641,685
Similar ratio
Find third proportional to 658,408.50 and 962,523
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.