Home / 129,489-282,993

Finding the Third Proportional to 129,489 and 282,993

Calculator

Solution

The third proportional to 129,489 and 282,993 is: 618,469.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,489 : 282,993 = 282,993 : x
  2. Step 2: Convert to fraction form
    129,489/282,993 = 282,993/x
  3. Step 3: Cross multiply
    129,489x = 282,993 × 282,993
  4. Step 4: Simplify right side
    129,489x = 80,085,038,049
  5. Step 5: Solve for x
    x = 80,085,038,049/129,489
  6. Step 6: Final answer
    x = 618,469.82

Related Problems

Find third proportional to 64,744.50 and 141,496.50
Half scale
Find third proportional to 258,978 and 565,986
Double scale
Find third proportional to 129,491 and 282,997
Similar ratio
Find third proportional to 194,233.50 and 424,489.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.