Home / 521,390.03-782,380.91-281,500.74

Finding the Fourth Proportional to 521,390.03, 782,380.91 and 281,500.74

Calculator

Solution

The fourth proportional to 521,390.03, 782,380.91 and 281,500.74 is: 422,410.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,390.03 : 782,380.91 = 281,500.74 : x
  2. Step 2: Convert to fraction form
    521,390.03/782,380.91 = 281,500.74/x
  3. Step 3: Cross multiply
    521,390.03x = 782,380.91 × 281,500.74
  4. Step 4: Simplify right side
    521,390.03x = 220,240,801,763.42
  5. Step 5: Solve for x
    x = 220,240,801,763.42/521,390.03
  6. Step 6: Final answer
    x = 422,410.84

Related Problems

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.