Home / 513,356.40-768,868.20-324,399.60

Finding the Fourth Proportional to 513,356.40, 768,868.20 and 324,399.60

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Solution

The fourth proportional to 513,356.40, 768,868.20 and 324,399.60 is: 485,862.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,356.40 : 768,868.20 = 324,399.60 : x
  2. Step 2: Convert to fraction form
    513,356.40/768,868.20 = 324,399.60/x
  3. Step 3: Cross multiply
    513,356.40x = 768,868.20 × 324,399.60
  4. Step 4: Simplify right side
    513,356.40x = 249,420,536,532.72
  5. Step 5: Solve for x
    x = 249,420,536,532.72/513,356.40
  6. Step 6: Final answer
    x = 485,862.33

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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.