Home / 310,488-680,589

Finding the Third Proportional to 310,488 and 680,589

Calculator

Solution

The third proportional to 310,488 and 680,589 is: 1,491,849.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,488 : 680,589 = 680,589 : x
  2. Step 2: Convert to fraction form
    310,488/680,589 = 680,589/x
  3. Step 3: Cross multiply
    310,488x = 680,589 × 680,589
  4. Step 4: Simplify right side
    310,488x = 463,201,386,921
  5. Step 5: Solve for x
    x = 463,201,386,921/310,488
  6. Step 6: Final answer
    x = 1,491,849.56

Related Problems

Find third proportional to 155,244 and 340,294.50
Half scale
Find third proportional to 620,976 and 1,361,178
Double scale
Find third proportional to 310,490 and 680,593
Similar ratio
Find third proportional to 465,732 and 1,020,883.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.