Home / 1,011.76-1,518-434.68

Finding the Fourth Proportional to 1,011.76, 1,518 and 434.68

Calculator

Solution

The fourth proportional to 1,011.76, 1,518 and 434.68 is: 652.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011.76 : 1,518 = 434.68 : x
  2. Step 2: Convert to fraction form
    1,011.76/1,518 = 434.68/x
  3. Step 3: Cross multiply
    1,011.76x = 1,518 × 434.68
  4. Step 4: Simplify right side
    1,011.76x = 659,844.24
  5. Step 5: Solve for x
    x = 659,844.24/1,011.76
  6. Step 6: Final answer
    x = 652.17

Related Problems

Find fourth proportional to 505.88, 759 and 217.34
Half scale
Find fourth proportional to 2,023.52, 3,036 and 869.36
Double scale
Find fourth proportional to 1,012.76, 1,519.50 and 435.68
Similar ratio
Find fourth proportional to 1,517.64, 2,277 and 652.02
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.