Home / 380,518-819,903

Finding the Third Proportional to 380,518 and 819,903

Calculator

Solution

The third proportional to 380,518 and 819,903 is: 1,766,646.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,518 : 819,903 = 819,903 : x
  2. Step 2: Convert to fraction form
    380,518/819,903 = 819,903/x
  3. Step 3: Cross multiply
    380,518x = 819,903 × 819,903
  4. Step 4: Simplify right side
    380,518x = 672,240,929,409
  5. Step 5: Solve for x
    x = 672,240,929,409/380,518
  6. Step 6: Final answer
    x = 1,766,646.86

Related Problems

Find third proportional to 190,259 and 409,951.50
Half scale
Find third proportional to 761,036 and 1,639,806
Double scale
Find third proportional to 380,520 and 819,907
Similar ratio
Find third proportional to 570,777 and 1,229,854.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.