Home / 320,679-677,403

Finding the Third Proportional to 320,679 and 677,403

Calculator

Solution

The third proportional to 320,679 and 677,403 is: 1,430,947.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,679 : 677,403 = 677,403 : x
  2. Step 2: Convert to fraction form
    320,679/677,403 = 677,403/x
  3. Step 3: Cross multiply
    320,679x = 677,403 × 677,403
  4. Step 4: Simplify right side
    320,679x = 458,874,824,409
  5. Step 5: Solve for x
    x = 458,874,824,409/320,679
  6. Step 6: Final answer
    x = 1,430,947.53

Related Problems

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.