Home / 378,728-814,678

Finding the Third Proportional to 378,728 and 814,678

Calculator

Solution

The third proportional to 378,728 and 814,678 is: 1,752,445.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,728 : 814,678 = 814,678 : x
  2. Step 2: Convert to fraction form
    378,728/814,678 = 814,678/x
  3. Step 3: Cross multiply
    378,728x = 814,678 × 814,678
  4. Step 4: Simplify right side
    378,728x = 663,700,243,684
  5. Step 5: Solve for x
    x = 663,700,243,684/378,728
  6. Step 6: Final answer
    x = 1,752,445.67

Related Problems

Find third proportional to 189,364 and 407,339
Half scale
Find third proportional to 757,456 and 1,629,356
Double scale
Find third proportional to 378,730 and 814,682
Similar ratio
Find third proportional to 568,092 and 1,222,017
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.