Home / 316,813-486,307

Finding the Third Proportional to 316,813 and 486,307

Calculator

Solution

The third proportional to 316,813 and 486,307 is: 746,479.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,813 : 486,307 = 486,307 : x
  2. Step 2: Convert to fraction form
    316,813/486,307 = 486,307/x
  3. Step 3: Cross multiply
    316,813x = 486,307 × 486,307
  4. Step 4: Simplify right side
    316,813x = 236,494,498,249
  5. Step 5: Solve for x
    x = 236,494,498,249/316,813
  6. Step 6: Final answer
    x = 746,479.78

Related Problems

Find third proportional to 158,406.50 and 243,153.50
Half scale
Find third proportional to 633,626 and 972,614
Double scale
Find third proportional to 316,815 and 486,310
Similar ratio
Find third proportional to 475,219.50 and 729,460.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.