Home / 355,238-677,738

Finding the Third Proportional to 355,238 and 677,738

Calculator

Solution

The third proportional to 355,238 and 677,738 is: 1,293,017.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,238 : 677,738 = 677,738 : x
  2. Step 2: Convert to fraction form
    355,238/677,738 = 677,738/x
  3. Step 3: Cross multiply
    355,238x = 677,738 × 677,738
  4. Step 4: Simplify right side
    355,238x = 459,328,796,644
  5. Step 5: Solve for x
    x = 459,328,796,644/355,238
  6. Step 6: Final answer
    x = 1,293,017.07

Related Problems

Find third proportional to 177,619 and 338,869
Half scale
Find third proportional to 710,476 and 1,355,476
Double scale
Find third proportional to 355,240 and 677,742
Similar ratio
Find third proportional to 532,857 and 1,016,607
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.