Home / 551,178-780,129

Finding the Third Proportional to 551,178 and 780,129

Calculator

Solution

The third proportional to 551,178 and 780,129 is: 1,104,182.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,178 : 780,129 = 780,129 : x
  2. Step 2: Convert to fraction form
    551,178/780,129 = 780,129/x
  3. Step 3: Cross multiply
    551,178x = 780,129 × 780,129
  4. Step 4: Simplify right side
    551,178x = 608,601,256,641
  5. Step 5: Solve for x
    x = 608,601,256,641/551,178
  6. Step 6: Final answer
    x = 1,104,182.78

Related Problems

Find third proportional to 275,589 and 390,064.50
Half scale
Find third proportional to 1,102,356 and 1,560,258
Double scale
Find third proportional to 551,180 and 780,132
Similar ratio
Find third proportional to 826,767 and 1,170,193.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.