Home / 276,474-422,730

Finding the Third Proportional to 276,474 and 422,730

Calculator

Solution

The third proportional to 276,474 and 422,730 is: 646,356.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,474 : 422,730 = 422,730 : x
  2. Step 2: Convert to fraction form
    276,474/422,730 = 422,730/x
  3. Step 3: Cross multiply
    276,474x = 422,730 × 422,730
  4. Step 4: Simplify right side
    276,474x = 178,700,652,900
  5. Step 5: Solve for x
    x = 178,700,652,900/276,474
  6. Step 6: Final answer
    x = 646,356.09

Related Problems

Find third proportional to 138,237 and 211,365
Half scale
Find third proportional to 552,948 and 845,460
Double scale
Find third proportional to 276,476 and 422,733
Similar ratio
Find third proportional to 414,711 and 634,095
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.