Home / 619.98-928.68-436.78

Finding the Fourth Proportional to 619.98, 928.68 and 436.78

Calculator

Solution

The fourth proportional to 619.98, 928.68 and 436.78 is: 654.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.98 : 928.68 = 436.78 : x
  2. Step 2: Convert to fraction form
    619.98/928.68 = 436.78/x
  3. Step 3: Cross multiply
    619.98x = 928.68 × 436.78
  4. Step 4: Simplify right side
    619.98x = 405,628.85
  5. Step 5: Solve for x
    x = 405,628.85/619.98
  6. Step 6: Final answer
    x = 654.26

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.