Home / 306,387-654,858

Finding the Third Proportional to 306,387 and 654,858

Calculator

Solution

The third proportional to 306,387 and 654,858 is: 1,399,664.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,387 : 654,858 = 654,858 : x
  2. Step 2: Convert to fraction form
    306,387/654,858 = 654,858/x
  3. Step 3: Cross multiply
    306,387x = 654,858 × 654,858
  4. Step 4: Simplify right side
    306,387x = 428,839,000,164
  5. Step 5: Solve for x
    x = 428,839,000,164/306,387
  6. Step 6: Final answer
    x = 1,399,664.48

Related Problems

Find third proportional to 153,193.50 and 327,429
Half scale
Find third proportional to 612,774 and 1,309,716
Double scale
Find third proportional to 306,389 and 654,862
Similar ratio
Find third proportional to 459,580.50 and 982,287
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.