Home / 299,779-642,292

Finding the Third Proportional to 299,779 and 642,292

Calculator

Solution

The third proportional to 299,779 and 642,292 is: 1,376,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,779 : 642,292 = 642,292 : x
  2. Step 2: Convert to fraction form
    299,779/642,292 = 642,292/x
  3. Step 3: Cross multiply
    299,779x = 642,292 × 642,292
  4. Step 4: Simplify right side
    299,779x = 412,539,013,264
  5. Step 5: Solve for x
    x = 412,539,013,264/299,779
  6. Step 6: Final answer
    x = 1,376,143.80

Related Problems

Find third proportional to 149,889.50 and 321,146
Half scale
Find third proportional to 599,558 and 1,284,584
Double scale
Find third proportional to 299,781 and 642,296
Similar ratio
Find third proportional to 449,668.50 and 963,438
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.