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Finding the Fourth Proportional to 488,609.80, 733,570.80 and 311,900.20

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Solution

The fourth proportional to 488,609.80, 733,570.80 and 311,900.20 is: 468,269.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,609.80 : 733,570.80 = 311,900.20 : x
  2. Step 2: Convert to fraction form
    488,609.80/733,570.80 = 311,900.20/x
  3. Step 3: Cross multiply
    488,609.80x = 733,570.80 × 311,900.20
  4. Step 4: Simplify right side
    488,609.80x = 228,800,879,234.16
  5. Step 5: Solve for x
    x = 228,800,879,234.16/488,609.80
  6. Step 6: Final answer
    x = 468,269.12

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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.