Home / 219,870-447,420

Finding the Third Proportional to 219,870 and 447,420

Calculator

Solution

The third proportional to 219,870 and 447,420 is: 910,468.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,870 : 447,420 = 447,420 : x
  2. Step 2: Convert to fraction form
    219,870/447,420 = 447,420/x
  3. Step 3: Cross multiply
    219,870x = 447,420 × 447,420
  4. Step 4: Simplify right side
    219,870x = 200,184,656,400
  5. Step 5: Solve for x
    x = 200,184,656,400/219,870
  6. Step 6: Final answer
    x = 910,468.26

Related Problems

Find third proportional to 109,935 and 223,710
Half scale
Find third proportional to 439,740 and 894,840
Double scale
Find third proportional to 219,872 and 447,424
Similar ratio
Find third proportional to 329,805 and 671,130
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.