Home / 451,278-991,118

Finding the Third Proportional to 451,278 and 991,118

Calculator

Solution

The third proportional to 451,278 and 991,118 is: 2,176,740.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,278 : 991,118 = 991,118 : x
  2. Step 2: Convert to fraction form
    451,278/991,118 = 991,118/x
  3. Step 3: Cross multiply
    451,278x = 991,118 × 991,118
  4. Step 4: Simplify right side
    451,278x = 982,314,889,924
  5. Step 5: Solve for x
    x = 982,314,889,924/451,278
  6. Step 6: Final answer
    x = 2,176,740.04

Related Problems

Find third proportional to 225,639 and 495,559
Half scale
Find third proportional to 902,556 and 1,982,236
Double scale
Find third proportional to 451,280 and 991,122
Similar ratio
Find third proportional to 676,917 and 1,486,677
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.