Home / 311,696-455,880

Finding the Third Proportional to 311,696 and 455,880

Calculator

Solution

The third proportional to 311,696 and 455,880 is: 666,760.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,696 : 455,880 = 455,880 : x
  2. Step 2: Convert to fraction form
    311,696/455,880 = 455,880/x
  3. Step 3: Cross multiply
    311,696x = 455,880 × 455,880
  4. Step 4: Simplify right side
    311,696x = 207,826,574,400
  5. Step 5: Solve for x
    x = 207,826,574,400/311,696
  6. Step 6: Final answer
    x = 666,760.48

Related Problems

Find third proportional to 155,848 and 227,940
Half scale
Find third proportional to 623,392 and 911,760
Double scale
Find third proportional to 311,698 and 455,883
Similar ratio
Find third proportional to 467,544 and 683,820
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.