Home / 389,356-863,257

Finding the Third Proportional to 389,356 and 863,257

Calculator

Solution

The third proportional to 389,356 and 863,257 is: 1,913,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,356 : 863,257 = 863,257 : x
  2. Step 2: Convert to fraction form
    389,356/863,257 = 863,257/x
  3. Step 3: Cross multiply
    389,356x = 863,257 × 863,257
  4. Step 4: Simplify right side
    389,356x = 745,212,648,049
  5. Step 5: Solve for x
    x = 745,212,648,049/389,356
  6. Step 6: Final answer
    x = 1,913,962.15

Related Problems

Find third proportional to 194,678 and 431,628.50
Half scale
Find third proportional to 778,712 and 1,726,514
Double scale
Find third proportional to 389,358 and 863,261
Similar ratio
Find third proportional to 584,034 and 1,294,885.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.