Home / 289,962-438,132

Finding the Third Proportional to 289,962 and 438,132

Calculator

Solution

The third proportional to 289,962 and 438,132 is: 662,016.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,962 : 438,132 = 438,132 : x
  2. Step 2: Convert to fraction form
    289,962/438,132 = 438,132/x
  3. Step 3: Cross multiply
    289,962x = 438,132 × 438,132
  4. Step 4: Simplify right side
    289,962x = 191,959,649,424
  5. Step 5: Solve for x
    x = 191,959,649,424/289,962
  6. Step 6: Final answer
    x = 662,016.57

Related Problems

Find third proportional to 144,981 and 219,066
Half scale
Find third proportional to 579,924 and 876,264
Double scale
Find third proportional to 289,964 and 438,135
Similar ratio
Find third proportional to 434,943 and 657,198
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.