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Finding the Fourth Proportional to 524,748.60, 787,122.90 and 419,772.60

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Solution

The fourth proportional to 524,748.60, 787,122.90 and 419,772.60 is: 629,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,748.60 : 787,122.90 = 419,772.60 : x
  2. Step 2: Convert to fraction form
    524,748.60/787,122.90 = 419,772.60/x
  3. Step 3: Cross multiply
    524,748.60x = 787,122.90 × 419,772.60
  4. Step 4: Simplify right side
    524,748.60x = 330,412,626,252.54
  5. Step 5: Solve for x
    x = 330,412,626,252.54/524,748.60
  6. Step 6: Final answer
    x = 629,658.90

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Double scale
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Similar ratio
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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.