Home / 328,678-520,005

Finding the Third Proportional to 328,678 and 520,005

Calculator

Solution

The third proportional to 328,678 and 520,005 is: 822,705.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,678 : 520,005 = 520,005 : x
  2. Step 2: Convert to fraction form
    328,678/520,005 = 520,005/x
  3. Step 3: Cross multiply
    328,678x = 520,005 × 520,005
  4. Step 4: Simplify right side
    328,678x = 270,405,200,025
  5. Step 5: Solve for x
    x = 270,405,200,025/328,678
  6. Step 6: Final answer
    x = 822,705.51

Related Problems

Find third proportional to 164,339 and 260,002.50
Half scale
Find third proportional to 657,356 and 1,040,010
Double scale
Find third proportional to 328,680 and 520,008
Similar ratio
Find third proportional to 493,017 and 780,007.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.