Home / 311,241-679,020

Finding the Third Proportional to 311,241 and 679,020

Calculator

Solution

The third proportional to 311,241 and 679,020 is: 1,481,386.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,241 : 679,020 = 679,020 : x
  2. Step 2: Convert to fraction form
    311,241/679,020 = 679,020/x
  3. Step 3: Cross multiply
    311,241x = 679,020 × 679,020
  4. Step 4: Simplify right side
    311,241x = 461,068,160,400
  5. Step 5: Solve for x
    x = 461,068,160,400/311,241
  6. Step 6: Final answer
    x = 1,481,386.32

Related Problems

Find third proportional to 155,620.50 and 339,510
Half scale
Find third proportional to 622,482 and 1,358,040
Double scale
Find third proportional to 311,243 and 679,024
Similar ratio
Find third proportional to 466,861.50 and 1,018,530
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.