Home / 311,908-670,406

Finding the Third Proportional to 311,908 and 670,406

Calculator

Solution

The third proportional to 311,908 and 670,406 is: 1,440,951.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,908 : 670,406 = 670,406 : x
  2. Step 2: Convert to fraction form
    311,908/670,406 = 670,406/x
  3. Step 3: Cross multiply
    311,908x = 670,406 × 670,406
  4. Step 4: Simplify right side
    311,908x = 449,444,204,836
  5. Step 5: Solve for x
    x = 449,444,204,836/311,908
  6. Step 6: Final answer
    x = 1,440,951.19

Related Problems

Find third proportional to 155,954 and 335,203
Half scale
Find third proportional to 623,816 and 1,340,812
Double scale
Find third proportional to 311,910 and 670,410
Similar ratio
Find third proportional to 467,862 and 1,005,609
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.