Home / 289,622-429,921

Finding the Third Proportional to 289,622 and 429,921

Calculator

Solution

The third proportional to 289,622 and 429,921 is: 638,183.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,622 : 429,921 = 429,921 : x
  2. Step 2: Convert to fraction form
    289,622/429,921 = 429,921/x
  3. Step 3: Cross multiply
    289,622x = 429,921 × 429,921
  4. Step 4: Simplify right side
    289,622x = 184,832,066,241
  5. Step 5: Solve for x
    x = 184,832,066,241/289,622
  6. Step 6: Final answer
    x = 638,183.79

Related Problems

Find third proportional to 144,811 and 214,960.50
Half scale
Find third proportional to 579,244 and 859,842
Double scale
Find third proportional to 289,624 and 429,924
Similar ratio
Find third proportional to 434,433 and 644,881.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.