Home / 390,528-791,919

Finding the Third Proportional to 390,528 and 791,919

Calculator

Solution

The third proportional to 390,528 and 791,919 is: 1,605,866.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,528 : 791,919 = 791,919 : x
  2. Step 2: Convert to fraction form
    390,528/791,919 = 791,919/x
  3. Step 3: Cross multiply
    390,528x = 791,919 × 791,919
  4. Step 4: Simplify right side
    390,528x = 627,135,702,561
  5. Step 5: Solve for x
    x = 627,135,702,561/390,528
  6. Step 6: Final answer
    x = 1,605,866.17

Related Problems

Find third proportional to 195,264 and 395,959.50
Half scale
Find third proportional to 781,056 and 1,583,838
Double scale
Find third proportional to 390,530 and 791,923
Similar ratio
Find third proportional to 585,792 and 1,187,878.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.