Home / 1,118.10-1,542.84-620.68

Finding the Fourth Proportional to 1,118.10, 1,542.84 and 620.68

Calculator

Solution

The fourth proportional to 1,118.10, 1,542.84 and 620.68 is: 856.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.10 : 1,542.84 = 620.68 : x
  2. Step 2: Convert to fraction form
    1,118.10/1,542.84 = 620.68/x
  3. Step 3: Cross multiply
    1,118.10x = 1,542.84 × 620.68
  4. Step 4: Simplify right side
    1,118.10x = 957,609.93
  5. Step 5: Solve for x
    x = 957,609.93/1,118.10
  6. Step 6: Final answer
    x = 856.46

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.