Home / 421,508-749,460

Finding the Third Proportional to 421,508 and 749,460

Calculator

Solution

The third proportional to 421,508 and 749,460 is: 1,332,573.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,508 : 749,460 = 749,460 : x
  2. Step 2: Convert to fraction form
    421,508/749,460 = 749,460/x
  3. Step 3: Cross multiply
    421,508x = 749,460 × 749,460
  4. Step 4: Simplify right side
    421,508x = 561,690,291,600
  5. Step 5: Solve for x
    x = 561,690,291,600/421,508
  6. Step 6: Final answer
    x = 1,332,573.26

Related Problems

Find third proportional to 210,754 and 374,730
Half scale
Find third proportional to 843,016 and 1,498,920
Double scale
Find third proportional to 421,510 and 749,464
Similar ratio
Find third proportional to 632,262 and 1,124,190
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.