Home / 280,387-616,847

Finding the Third Proportional to 280,387 and 616,847

Calculator

Solution

The third proportional to 280,387 and 616,847 is: 1,357,053.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,387 : 616,847 = 616,847 : x
  2. Step 2: Convert to fraction form
    280,387/616,847 = 616,847/x
  3. Step 3: Cross multiply
    280,387x = 616,847 × 616,847
  4. Step 4: Simplify right side
    280,387x = 380,500,221,409
  5. Step 5: Solve for x
    x = 380,500,221,409/280,387
  6. Step 6: Final answer
    x = 1,357,053.72

Related Problems

Find third proportional to 140,193.50 and 308,423.50
Half scale
Find third proportional to 560,774 and 1,233,694
Double scale
Find third proportional to 280,389 and 616,851
Similar ratio
Find third proportional to 420,580.50 and 925,270.50
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.