Home / 258,363-557,478

Finding the Third Proportional to 258,363 and 557,478

Calculator

Solution

The third proportional to 258,363 and 557,478 is: 1,202,887.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,363 : 557,478 = 557,478 : x
  2. Step 2: Convert to fraction form
    258,363/557,478 = 557,478/x
  3. Step 3: Cross multiply
    258,363x = 557,478 × 557,478
  4. Step 4: Simplify right side
    258,363x = 310,781,720,484
  5. Step 5: Solve for x
    x = 310,781,720,484/258,363
  6. Step 6: Final answer
    x = 1,202,887.88

Related Problems

Find third proportional to 129,181.50 and 278,739
Half scale
Find third proportional to 516,726 and 1,114,956
Double scale
Find third proportional to 258,365 and 557,482
Similar ratio
Find third proportional to 387,544.50 and 836,217
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.