Home / 208,640-455,512

Finding the Third Proportional to 208,640 and 455,512

Calculator

Solution

The third proportional to 208,640 and 455,512 is: 994,493.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,640 : 455,512 = 455,512 : x
  2. Step 2: Convert to fraction form
    208,640/455,512 = 455,512/x
  3. Step 3: Cross multiply
    208,640x = 455,512 × 455,512
  4. Step 4: Simplify right side
    208,640x = 207,491,182,144
  5. Step 5: Solve for x
    x = 207,491,182,144/208,640
  6. Step 6: Final answer
    x = 994,493.78

Related Problems

Find third proportional to 104,320 and 227,756
Half scale
Find third proportional to 417,280 and 911,024
Double scale
Find third proportional to 208,642 and 455,516
Similar ratio
Find third proportional to 312,960 and 683,268
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.