Home / 258,800-569,728

Finding the Third Proportional to 258,800 and 569,728

Calculator

Solution

The third proportional to 258,800 and 569,728 is: 1,254,211.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,800 : 569,728 = 569,728 : x
  2. Step 2: Convert to fraction form
    258,800/569,728 = 569,728/x
  3. Step 3: Cross multiply
    258,800x = 569,728 × 569,728
  4. Step 4: Simplify right side
    258,800x = 324,589,993,984
  5. Step 5: Solve for x
    x = 324,589,993,984/258,800
  6. Step 6: Final answer
    x = 1,254,211.72

Related Problems

Find third proportional to 129,400 and 284,864
Half scale
Find third proportional to 517,600 and 1,139,456
Double scale
Find third proportional to 258,802 and 569,732
Similar ratio
Find third proportional to 388,200 and 854,592
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.