Home / 279,204-620,328

Finding the Third Proportional to 279,204 and 620,328

Calculator

Solution

The third proportional to 279,204 and 620,328 is: 1,378,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,204 : 620,328 = 620,328 : x
  2. Step 2: Convert to fraction form
    279,204/620,328 = 620,328/x
  3. Step 3: Cross multiply
    279,204x = 620,328 × 620,328
  4. Step 4: Simplify right side
    279,204x = 384,806,827,584
  5. Step 5: Solve for x
    x = 384,806,827,584/279,204
  6. Step 6: Final answer
    x = 1,378,228.20

Related Problems

Find third proportional to 139,602 and 310,164
Half scale
Find third proportional to 558,408 and 1,240,656
Double scale
Find third proportional to 279,206 and 620,332
Similar ratio
Find third proportional to 418,806 and 930,492
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.