Home / 438,618-661,167

Finding the Third Proportional to 438,618 and 661,167

Calculator

Solution

The third proportional to 438,618 and 661,167 is: 996,634.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,618 : 661,167 = 661,167 : x
  2. Step 2: Convert to fraction form
    438,618/661,167 = 661,167/x
  3. Step 3: Cross multiply
    438,618x = 661,167 × 661,167
  4. Step 4: Simplify right side
    438,618x = 437,141,801,889
  5. Step 5: Solve for x
    x = 437,141,801,889/438,618
  6. Step 6: Final answer
    x = 996,634.43

Related Problems

Find third proportional to 219,309 and 330,583.50
Half scale
Find third proportional to 877,236 and 1,322,334
Double scale
Find third proportional to 438,620 and 661,170
Similar ratio
Find third proportional to 657,927 and 991,750.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.