Home / 311,570-677,812

Finding the Third Proportional to 311,570 and 677,812

Calculator

Solution

The third proportional to 311,570 and 677,812 is: 1,474,561.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,570 : 677,812 = 677,812 : x
  2. Step 2: Convert to fraction form
    311,570/677,812 = 677,812/x
  3. Step 3: Cross multiply
    311,570x = 677,812 × 677,812
  4. Step 4: Simplify right side
    311,570x = 459,429,107,344
  5. Step 5: Solve for x
    x = 459,429,107,344/311,570
  6. Step 6: Final answer
    x = 1,474,561.44

Related Problems

Find third proportional to 155,785 and 338,906
Half scale
Find third proportional to 623,140 and 1,355,624
Double scale
Find third proportional to 311,572 and 677,816
Similar ratio
Find third proportional to 467,355 and 1,016,718
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.