Home / 1,118.14-1,543.01-620.75

Finding the Fourth Proportional to 1,118.14, 1,543.01 and 620.75

Calculator

Solution

The fourth proportional to 1,118.14, 1,543.01 and 620.75 is: 856.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.14 : 1,543.01 = 620.75 : x
  2. Step 2: Convert to fraction form
    1,118.14/1,543.01 = 620.75/x
  3. Step 3: Cross multiply
    1,118.14x = 1,543.01 × 620.75
  4. Step 4: Simplify right side
    1,118.14x = 957,823.46
  5. Step 5: Solve for x
    x = 957,823.46/1,118.14
  6. Step 6: Final answer
    x = 856.62

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.