Home / 645,105.25-890,355.26-373,338.61

Finding the Fourth Proportional to 645,105.25, 890,355.26 and 373,338.61

Calculator

Solution

The fourth proportional to 645,105.25, 890,355.26 and 373,338.61 is: 515,270.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,105.25 : 890,355.26 = 373,338.61 : x
  2. Step 2: Convert to fraction form
    645,105.25/890,355.26 = 373,338.61/x
  3. Step 3: Cross multiply
    645,105.25x = 890,355.26 × 373,338.61
  4. Step 4: Simplify right side
    645,105.25x = 332,403,995,174.59
  5. Step 5: Solve for x
    x = 332,403,995,174.59/645,105.25
  6. Step 6: Final answer
    x = 515,270.95

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.