Home / 129,987,302-285,479,872

Finding the Third Proportional to 129,987,302 and 285,479,872

Calculator

Solution

The third proportional to 129,987,302 and 285,479,872 is: 626,974,758.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,987,302 : 285,479,872 = 285,479,872 : x
  2. Step 2: Convert to fraction form
    129,987,302/285,479,872 = 285,479,872/x
  3. Step 3: Cross multiply
    129,987,302x = 285,479,872 × 285,479,872
  4. Step 4: Simplify right side
    129,987,302x = 81,498,757,317,136,384
  5. Step 5: Solve for x
    x = 81,498,757,317,136,384/129,987,302
  6. Step 6: Final answer
    x = 626,974,758.79

Related Problems

Find third proportional to 64,993,651 and 142,739,936
Half scale
Find third proportional to 259,974,604 and 570,959,744
Double scale
Find third proportional to 129,987,304 and 285,479,876
Similar ratio
Find third proportional to 194,980,953 and 428,219,808
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.