Home / 381,467-828,480

Finding the Third Proportional to 381,467 and 828,480

Calculator

Solution

The third proportional to 381,467 and 828,480 is: 1,799,314.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,467 : 828,480 = 828,480 : x
  2. Step 2: Convert to fraction form
    381,467/828,480 = 828,480/x
  3. Step 3: Cross multiply
    381,467x = 828,480 × 828,480
  4. Step 4: Simplify right side
    381,467x = 686,379,110,400
  5. Step 5: Solve for x
    x = 686,379,110,400/381,467
  6. Step 6: Final answer
    x = 1,799,314.52

Related Problems

Find third proportional to 190,733.50 and 414,240
Half scale
Find third proportional to 762,934 and 1,656,960
Double scale
Find third proportional to 381,469 and 828,484
Similar ratio
Find third proportional to 572,200.50 and 1,242,720
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.