Home / 393,608-815,224

Finding the Third Proportional to 393,608 and 815,224

Calculator

Solution

The third proportional to 393,608 and 815,224 is: 1,688,456.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,608 : 815,224 = 815,224 : x
  2. Step 2: Convert to fraction form
    393,608/815,224 = 815,224/x
  3. Step 3: Cross multiply
    393,608x = 815,224 × 815,224
  4. Step 4: Simplify right side
    393,608x = 664,590,170,176
  5. Step 5: Solve for x
    x = 664,590,170,176/393,608
  6. Step 6: Final answer
    x = 1,688,456.97

Related Problems

Find third proportional to 196,804 and 407,612
Half scale
Find third proportional to 787,216 and 1,630,448
Double scale
Find third proportional to 393,610 and 815,228
Similar ratio
Find third proportional to 590,412 and 1,222,836
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.