Home / 258,042-398,727

Finding the Third Proportional to 258,042 and 398,727

Calculator

Solution

The third proportional to 258,042 and 398,727 is: 616,113.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,042 : 398,727 = 398,727 : x
  2. Step 2: Convert to fraction form
    258,042/398,727 = 398,727/x
  3. Step 3: Cross multiply
    258,042x = 398,727 × 398,727
  4. Step 4: Simplify right side
    258,042x = 158,983,220,529
  5. Step 5: Solve for x
    x = 158,983,220,529/258,042
  6. Step 6: Final answer
    x = 616,113.74

Related Problems

Find third proportional to 129,021 and 199,363.50
Half scale
Find third proportional to 516,084 and 797,454
Double scale
Find third proportional to 258,044 and 398,730
Similar ratio
Find third proportional to 387,063 and 598,090.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.