Home / 259,766-390,411

Finding the Third Proportional to 259,766 and 390,411

Calculator

Solution

The third proportional to 259,766 and 390,411 is: 586,761.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,766 : 390,411 = 390,411 : x
  2. Step 2: Convert to fraction form
    259,766/390,411 = 390,411/x
  3. Step 3: Cross multiply
    259,766x = 390,411 × 390,411
  4. Step 4: Simplify right side
    259,766x = 152,420,748,921
  5. Step 5: Solve for x
    x = 152,420,748,921/259,766
  6. Step 6: Final answer
    x = 586,761.74

Related Problems

Find third proportional to 129,883 and 195,205.50
Half scale
Find third proportional to 519,532 and 780,822
Double scale
Find third proportional to 259,768 and 390,414
Similar ratio
Find third proportional to 389,649 and 585,616.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.