Home / 321,659-687,492

Finding the Third Proportional to 321,659 and 687,492

Calculator

Solution

The third proportional to 321,659 and 687,492 is: 1,469,398.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,659 : 687,492 = 687,492 : x
  2. Step 2: Convert to fraction form
    321,659/687,492 = 687,492/x
  3. Step 3: Cross multiply
    321,659x = 687,492 × 687,492
  4. Step 4: Simplify right side
    321,659x = 472,645,250,064
  5. Step 5: Solve for x
    x = 472,645,250,064/321,659
  6. Step 6: Final answer
    x = 1,469,398.49

Related Problems

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.