Home / 258,256-558,009

Finding the Third Proportional to 258,256 and 558,009

Calculator

Solution

The third proportional to 258,256 and 558,009 is: 1,205,679.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,256 : 558,009 = 558,009 : x
  2. Step 2: Convert to fraction form
    258,256/558,009 = 558,009/x
  3. Step 3: Cross multiply
    258,256x = 558,009 × 558,009
  4. Step 4: Simplify right side
    258,256x = 311,374,044,081
  5. Step 5: Solve for x
    x = 311,374,044,081/258,256
  6. Step 6: Final answer
    x = 1,205,679.81

Related Problems

Find third proportional to 129,128 and 279,004.50
Half scale
Find third proportional to 516,512 and 1,116,018
Double scale
Find third proportional to 258,258 and 558,013
Similar ratio
Find third proportional to 387,384 and 837,013.50
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.