Home / 290,328-622,128

Finding the Third Proportional to 290,328 and 622,128

Calculator

Solution

The third proportional to 290,328 and 622,128 is: 1,333,124.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,328 : 622,128 = 622,128 : x
  2. Step 2: Convert to fraction form
    290,328/622,128 = 622,128/x
  3. Step 3: Cross multiply
    290,328x = 622,128 × 622,128
  4. Step 4: Simplify right side
    290,328x = 387,043,248,384
  5. Step 5: Solve for x
    x = 387,043,248,384/290,328
  6. Step 6: Final answer
    x = 1,333,124.08

Related Problems

Find third proportional to 145,164 and 311,064
Half scale
Find third proportional to 580,656 and 1,244,256
Double scale
Find third proportional to 290,330 and 622,132
Similar ratio
Find third proportional to 435,492 and 933,192
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.