Home / 127,778-278,884

Finding the Third Proportional to 127,778 and 278,884

Calculator

Solution

The third proportional to 127,778 and 278,884 is: 608,682.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,778 : 278,884 = 278,884 : x
  2. Step 2: Convert to fraction form
    127,778/278,884 = 278,884/x
  3. Step 3: Cross multiply
    127,778x = 278,884 × 278,884
  4. Step 4: Simplify right side
    127,778x = 77,776,285,456
  5. Step 5: Solve for x
    x = 77,776,285,456/127,778
  6. Step 6: Final answer
    x = 608,682.91

Related Problems

Find third proportional to 63,889 and 139,442
Half scale
Find third proportional to 255,556 and 557,768
Double scale
Find third proportional to 127,780 and 278,888
Similar ratio
Find third proportional to 191,667 and 418,326
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.