Home / 311,760-672,168

Finding the Third Proportional to 311,760 and 672,168

Calculator

Solution

The third proportional to 311,760 and 672,168 is: 1,449,223.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,760 : 672,168 = 672,168 : x
  2. Step 2: Convert to fraction form
    311,760/672,168 = 672,168/x
  3. Step 3: Cross multiply
    311,760x = 672,168 × 672,168
  4. Step 4: Simplify right side
    311,760x = 451,809,820,224
  5. Step 5: Solve for x
    x = 451,809,820,224/311,760
  6. Step 6: Final answer
    x = 1,449,223.19

Related Problems

Find third proportional to 155,880 and 336,084
Half scale
Find third proportional to 623,520 and 1,344,336
Double scale
Find third proportional to 311,762 and 672,172
Similar ratio
Find third proportional to 467,640 and 1,008,252
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.