Home / 665,635.66-919,020.15-393,790.64

Finding the Fourth Proportional to 665,635.66, 919,020.15 and 393,790.64

Calculator

Solution

The fourth proportional to 665,635.66, 919,020.15 and 393,790.64 is: 543,693.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,635.66 : 919,020.15 = 393,790.64 : x
  2. Step 2: Convert to fraction form
    665,635.66/919,020.15 = 393,790.64/x
  3. Step 3: Cross multiply
    665,635.66x = 919,020.15 × 393,790.64
  4. Step 4: Simplify right side
    665,635.66x = 361,901,528,446.30
  5. Step 5: Solve for x
    x = 361,901,528,446.30/665,635.66
  6. Step 6: Final answer
    x = 543,693.12

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.