Home / 352,540-687,368

Finding the Third Proportional to 352,540 and 687,368

Calculator

Solution

The third proportional to 352,540 and 687,368 is: 1,340,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,540 : 687,368 = 687,368 : x
  2. Step 2: Convert to fraction form
    352,540/687,368 = 687,368/x
  3. Step 3: Cross multiply
    352,540x = 687,368 × 687,368
  4. Step 4: Simplify right side
    352,540x = 472,474,767,424
  5. Step 5: Solve for x
    x = 472,474,767,424/352,540
  6. Step 6: Final answer
    x = 1,340,201.87

Related Problems

Find third proportional to 176,270 and 343,684
Half scale
Find third proportional to 705,080 and 1,374,736
Double scale
Find third proportional to 352,542 and 687,372
Similar ratio
Find third proportional to 528,810 and 1,031,052
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.