Home / 409,717-642,726

Finding the Third Proportional to 409,717 and 642,726

Calculator

Solution

The third proportional to 409,717 and 642,726 is: 1,008,248.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,717 : 642,726 = 642,726 : x
  2. Step 2: Convert to fraction form
    409,717/642,726 = 642,726/x
  3. Step 3: Cross multiply
    409,717x = 642,726 × 642,726
  4. Step 4: Simplify right side
    409,717x = 413,096,711,076
  5. Step 5: Solve for x
    x = 413,096,711,076/409,717
  6. Step 6: Final answer
    x = 1,008,248.89

Related Problems

Find third proportional to 204,858.50 and 321,363
Half scale
Find third proportional to 819,434 and 1,285,452
Double scale
Find third proportional to 409,719 and 642,729
Similar ratio
Find third proportional to 614,575.50 and 964,089
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.