Home / 640,786.64-884,249.88-354,289.52

Finding the Fourth Proportional to 640,786.64, 884,249.88 and 354,289.52

Calculator

Solution

The fourth proportional to 640,786.64, 884,249.88 and 354,289.52 is: 488,899.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,786.64 : 884,249.88 = 354,289.52 : x
  2. Step 2: Convert to fraction form
    640,786.64/884,249.88 = 354,289.52/x
  3. Step 3: Cross multiply
    640,786.64x = 884,249.88 × 354,289.52
  4. Step 4: Simplify right side
    640,786.64x = 313,280,465,545.26
  5. Step 5: Solve for x
    x = 313,280,465,545.26/640,786.64
  6. Step 6: Final answer
    x = 488,899.81

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.