Home / 641,028.60-961,629.30-220,433.40

Finding the Fourth Proportional to 641,028.60, 961,629.30 and 220,433.40

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Solution

The fourth proportional to 641,028.60, 961,629.30 and 220,433.40 is: 330,679.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,028.60 : 961,629.30 = 220,433.40 : x
  2. Step 2: Convert to fraction form
    641,028.60/961,629.30 = 220,433.40/x
  3. Step 3: Cross multiply
    641,028.60x = 961,629.30 × 220,433.40
  4. Step 4: Simplify right side
    641,028.60x = 211,975,216,138.62
  5. Step 5: Solve for x
    x = 211,975,216,138.62/641,028.60
  6. Step 6: Final answer
    x = 330,679.81

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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.