Home / 308,074-661,988

Finding the Third Proportional to 308,074 and 661,988

Calculator

Solution

The third proportional to 308,074 and 661,988 is: 1,422,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,074 : 661,988 = 661,988 : x
  2. Step 2: Convert to fraction form
    308,074/661,988 = 661,988/x
  3. Step 3: Cross multiply
    308,074x = 661,988 × 661,988
  4. Step 4: Simplify right side
    308,074x = 438,228,112,144
  5. Step 5: Solve for x
    x = 438,228,112,144/308,074
  6. Step 6: Final answer
    x = 1,422,476.78

Related Problems

Find third proportional to 154,037 and 330,994
Half scale
Find third proportional to 616,148 and 1,323,976
Double scale
Find third proportional to 308,076 and 661,992
Similar ratio
Find third proportional to 462,111 and 992,982
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.