Home / 255,638-557,416

Finding the Third Proportional to 255,638 and 557,416

Calculator

Solution

The third proportional to 255,638 and 557,416 is: 1,215,439.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,638 : 557,416 = 557,416 : x
  2. Step 2: Convert to fraction form
    255,638/557,416 = 557,416/x
  3. Step 3: Cross multiply
    255,638x = 557,416 × 557,416
  4. Step 4: Simplify right side
    255,638x = 310,712,597,056
  5. Step 5: Solve for x
    x = 310,712,597,056/255,638
  6. Step 6: Final answer
    x = 1,215,439.79

Related Problems

Find third proportional to 127,819 and 278,708
Half scale
Find third proportional to 511,276 and 1,114,832
Double scale
Find third proportional to 255,640 and 557,420
Similar ratio
Find third proportional to 383,457 and 836,124
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.