Home / 381,574-828,704

Finding the Third Proportional to 381,574 and 828,704

Calculator

Solution

The third proportional to 381,574 and 828,704 is: 1,799,782.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,574 : 828,704 = 828,704 : x
  2. Step 2: Convert to fraction form
    381,574/828,704 = 828,704/x
  3. Step 3: Cross multiply
    381,574x = 828,704 × 828,704
  4. Step 4: Simplify right side
    381,574x = 686,750,319,616
  5. Step 5: Solve for x
    x = 686,750,319,616/381,574
  6. Step 6: Final answer
    x = 1,799,782.79

Related Problems

Find third proportional to 190,787 and 414,352
Half scale
Find third proportional to 763,148 and 1,657,408
Double scale
Find third proportional to 381,576 and 828,708
Similar ratio
Find third proportional to 572,361 and 1,243,056
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.