Home / 381,208-828,816

Finding the Third Proportional to 381,208 and 828,816

Calculator

Solution

The third proportional to 381,208 and 828,816 is: 1,801,997.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,208 : 828,816 = 828,816 : x
  2. Step 2: Convert to fraction form
    381,208/828,816 = 828,816/x
  3. Step 3: Cross multiply
    381,208x = 828,816 × 828,816
  4. Step 4: Simplify right side
    381,208x = 686,935,961,856
  5. Step 5: Solve for x
    x = 686,935,961,856/381,208
  6. Step 6: Final answer
    x = 1,801,997.76

Related Problems

Find third proportional to 190,604 and 414,408
Half scale
Find third proportional to 762,416 and 1,657,632
Double scale
Find third proportional to 381,210 and 828,820
Similar ratio
Find third proportional to 571,812 and 1,243,224
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.