Home / 387,840-808,888

Finding the Third Proportional to 387,840 and 808,888

Calculator

Solution

The third proportional to 387,840 and 808,888 is: 1,687,035.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,840 : 808,888 = 808,888 : x
  2. Step 2: Convert to fraction form
    387,840/808,888 = 808,888/x
  3. Step 3: Cross multiply
    387,840x = 808,888 × 808,888
  4. Step 4: Simplify right side
    387,840x = 654,299,796,544
  5. Step 5: Solve for x
    x = 654,299,796,544/387,840
  6. Step 6: Final answer
    x = 1,687,035.37

Related Problems

Find third proportional to 193,920 and 404,444
Half scale
Find third proportional to 775,680 and 1,617,776
Double scale
Find third proportional to 387,842 and 808,892
Similar ratio
Find third proportional to 581,760 and 1,213,332
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.