Home / 513,140.40-768,544.20-263,530.80

Finding the Fourth Proportional to 513,140.40, 768,544.20 and 263,530.80

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Solution

The fourth proportional to 513,140.40, 768,544.20 and 263,530.80 is: 394,697.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,140.40 : 768,544.20 = 263,530.80 : x
  2. Step 2: Convert to fraction form
    513,140.40/768,544.20 = 263,530.80/x
  3. Step 3: Cross multiply
    513,140.40x = 768,544.20 × 263,530.80
  4. Step 4: Simplify right side
    513,140.40x = 202,535,067,861.36
  5. Step 5: Solve for x
    x = 202,535,067,861.36/513,140.40
  6. Step 6: Final answer
    x = 394,697.18

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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.