Home / 816-1,224-528.06

Finding the Fourth Proportional to 816, 1,224 and 528.06

Calculator

Solution

The fourth proportional to 816, 1,224 and 528.06 is: 792.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    816 : 1,224 = 528.06 : x
  2. Step 2: Convert to fraction form
    816/1,224 = 528.06/x
  3. Step 3: Cross multiply
    816x = 1,224 × 528.06
  4. Step 4: Simplify right side
    816x = 646,345.44
  5. Step 5: Solve for x
    x = 646,345.44/816
  6. Step 6: Final answer
    x = 792.09

Related Problems

Find fourth proportional to 408, 612 and 264.03
Half scale
Find fourth proportional to 1,632, 2,448 and 1,056.12
Double scale
Find fourth proportional to 817, 1,225.50 and 529.06
Similar ratio
Find fourth proportional to 1,224, 1,836 and 792.09
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.