Home / 309,266-478,865

Finding the Third Proportional to 309,266 and 478,865

Calculator

Solution

The third proportional to 309,266 and 478,865 is: 741,470.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,266 : 478,865 = 478,865 : x
  2. Step 2: Convert to fraction form
    309,266/478,865 = 478,865/x
  3. Step 3: Cross multiply
    309,266x = 478,865 × 478,865
  4. Step 4: Simplify right side
    309,266x = 229,311,688,225
  5. Step 5: Solve for x
    x = 229,311,688,225/309,266
  6. Step 6: Final answer
    x = 741,470.73

Related Problems

Find third proportional to 154,633 and 239,432.50
Half scale
Find third proportional to 618,532 and 957,730
Double scale
Find third proportional to 309,268 and 478,868
Similar ratio
Find third proportional to 463,899 and 718,297.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.