Home / 664,416.78-996,589.44-327,121.17

Finding the Fourth Proportional to 664,416.78, 996,589.44 and 327,121.17

Calculator

Solution

The fourth proportional to 664,416.78, 996,589.44 and 327,121.17 is: 490,664.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,416.78 : 996,589.44 = 327,121.17 : x
  2. Step 2: Convert to fraction form
    664,416.78/996,589.44 = 327,121.17/x
  3. Step 3: Cross multiply
    664,416.78x = 996,589.44 × 327,121.17
  4. Step 4: Simplify right side
    664,416.78x = 326,005,503,622.45
  5. Step 5: Solve for x
    x = 326,005,503,622.45/664,416.78
  6. Step 6: Final answer
    x = 490,664.16

Related Problems

Find fourth proportional to 332,208.39, 498,294.72 and 163,560.59
Half scale
Find fourth proportional to 1,328,833.56, 1,993,178.88 and 654,242.34
Double scale
Find fourth proportional to 664,417.78, 996,590.94 and 327,122.17
Similar ratio
Find fourth proportional to 996,625.17, 1,494,884.16 and 490,681.76
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.