Home / 407,406-877,221

Finding the Third Proportional to 407,406 and 877,221

Calculator

Solution

The third proportional to 407,406 and 877,221 is: 1,888,820.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,406 : 877,221 = 877,221 : x
  2. Step 2: Convert to fraction form
    407,406/877,221 = 877,221/x
  3. Step 3: Cross multiply
    407,406x = 877,221 × 877,221
  4. Step 4: Simplify right side
    407,406x = 769,516,682,841
  5. Step 5: Solve for x
    x = 769,516,682,841/407,406
  6. Step 6: Final answer
    x = 1,888,820.20

Related Problems

Find third proportional to 203,703 and 438,610.50
Half scale
Find third proportional to 814,812 and 1,754,442
Double scale
Find third proportional to 407,408 and 877,225
Similar ratio
Find third proportional to 611,109 and 1,315,831.50
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.