Home / 257,908-394,494

Finding the Third Proportional to 257,908 and 394,494

Calculator

Solution

The third proportional to 257,908 and 394,494 is: 603,414.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,908 : 394,494 = 394,494 : x
  2. Step 2: Convert to fraction form
    257,908/394,494 = 394,494/x
  3. Step 3: Cross multiply
    257,908x = 394,494 × 394,494
  4. Step 4: Simplify right side
    257,908x = 155,625,516,036
  5. Step 5: Solve for x
    x = 155,625,516,036/257,908
  6. Step 6: Final answer
    x = 603,414.85

Related Problems

Find third proportional to 128,954 and 197,247
Half scale
Find third proportional to 515,816 and 788,988
Double scale
Find third proportional to 257,910 and 394,497
Similar ratio
Find third proportional to 386,862 and 591,741
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.