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Finding the Fourth Proportional to 488,496.30, 733,400.55 and 311,786.70

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Solution

The fourth proportional to 488,496.30, 733,400.55 and 311,786.70 is: 468,098.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,496.30 : 733,400.55 = 311,786.70 : x
  2. Step 2: Convert to fraction form
    488,496.30/733,400.55 = 311,786.70/x
  3. Step 3: Cross multiply
    488,496.30x = 733,400.55 × 311,786.70
  4. Step 4: Simplify right side
    488,496.30x = 228,664,537,262.69
  5. Step 5: Solve for x
    x = 228,664,537,262.69/488,496.30
  6. Step 6: Final answer
    x = 468,098.81

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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.