Home / 387,654-821,337

Finding the Third Proportional to 387,654 and 821,337

Calculator

Solution

The third proportional to 387,654 and 821,337 is: 1,740,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,654 : 821,337 = 821,337 : x
  2. Step 2: Convert to fraction form
    387,654/821,337 = 821,337/x
  3. Step 3: Cross multiply
    387,654x = 821,337 × 821,337
  4. Step 4: Simplify right side
    387,654x = 674,594,467,569
  5. Step 5: Solve for x
    x = 674,594,467,569/387,654
  6. Step 6: Final answer
    x = 1,740,197.36

Related Problems

Find third proportional to 193,827 and 410,668.50
Half scale
Find third proportional to 775,308 and 1,642,674
Double scale
Find third proportional to 387,656 and 821,341
Similar ratio
Find third proportional to 581,481 and 1,232,005.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.