Home / 276,591-427,170

Finding the Third Proportional to 276,591 and 427,170

Calculator

Solution

The third proportional to 276,591 and 427,170 is: 659,725.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,591 : 427,170 = 427,170 : x
  2. Step 2: Convert to fraction form
    276,591/427,170 = 427,170/x
  3. Step 3: Cross multiply
    276,591x = 427,170 × 427,170
  4. Step 4: Simplify right side
    276,591x = 182,474,208,900
  5. Step 5: Solve for x
    x = 182,474,208,900/276,591
  6. Step 6: Final answer
    x = 659,725.76

Related Problems

Find third proportional to 138,295.50 and 213,585
Half scale
Find third proportional to 553,182 and 854,340
Double scale
Find third proportional to 276,593 and 427,173
Similar ratio
Find third proportional to 414,886.50 and 640,755
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.