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Finding the Fourth Proportional to 665,339.85, 996,861.60 and 309,624.30

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Solution

The fourth proportional to 665,339.85, 996,861.60 and 309,624.30 is: 463,902.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,339.85 : 996,861.60 = 309,624.30 : x
  2. Step 2: Convert to fraction form
    665,339.85/996,861.60 = 309,624.30/x
  3. Step 3: Cross multiply
    665,339.85x = 996,861.60 × 309,624.30
  4. Step 4: Simplify right side
    665,339.85x = 308,652,575,096.88
  5. Step 5: Solve for x
    x = 308,652,575,096.88/665,339.85
  6. Step 6: Final answer
    x = 463,902.13

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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.