Home / 311,730-681,792

Finding the Third Proportional to 311,730 and 681,792

Calculator

Solution

The third proportional to 311,730 and 681,792 is: 1,491,163.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,730 : 681,792 = 681,792 : x
  2. Step 2: Convert to fraction form
    311,730/681,792 = 681,792/x
  3. Step 3: Cross multiply
    311,730x = 681,792 × 681,792
  4. Step 4: Simplify right side
    311,730x = 464,840,331,264
  5. Step 5: Solve for x
    x = 464,840,331,264/311,730
  6. Step 6: Final answer
    x = 1,491,163.29

Related Problems

Find third proportional to 155,865 and 340,896
Half scale
Find third proportional to 623,460 and 1,363,584
Double scale
Find third proportional to 311,732 and 681,796
Similar ratio
Find third proportional to 467,595 and 1,022,688
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.