Home / 339,840-475,320

Finding the Third Proportional to 339,840 and 475,320

Calculator

Solution

The third proportional to 339,840 and 475,320 is: 664,810.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,840 : 475,320 = 475,320 : x
  2. Step 2: Convert to fraction form
    339,840/475,320 = 475,320/x
  3. Step 3: Cross multiply
    339,840x = 475,320 × 475,320
  4. Step 4: Simplify right side
    339,840x = 225,929,102,400
  5. Step 5: Solve for x
    x = 225,929,102,400/339,840
  6. Step 6: Final answer
    x = 664,810.21

Related Problems

Find third proportional to 169,920 and 237,660
Half scale
Find third proportional to 679,680 and 950,640
Double scale
Find third proportional to 339,842 and 475,323
Similar ratio
Find third proportional to 509,760 and 712,980
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.