Home / 645,512.45-890,794.77-355,107.04

Finding the Fourth Proportional to 645,512.45, 890,794.77 and 355,107.04

Calculator

Solution

The fourth proportional to 645,512.45, 890,794.77 and 355,107.04 is: 490,040.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,512.45 : 890,794.77 = 355,107.04 : x
  2. Step 2: Convert to fraction form
    645,512.45/890,794.77 = 355,107.04/x
  3. Step 3: Cross multiply
    645,512.45x = 890,794.77 × 355,107.04
  4. Step 4: Simplify right side
    645,512.45x = 316,327,490,463.54
  5. Step 5: Solve for x
    x = 316,327,490,463.54/645,512.45
  6. Step 6: Final answer
    x = 490,040.89

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.