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Finding the Fourth Proportional to 663,423.31, 994,850.64 and 308,400.31

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Solution

The fourth proportional to 663,423.31, 994,850.64 and 308,400.31 is: 462,468.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,423.31 : 994,850.64 = 308,400.31 : x
  2. Step 2: Convert to fraction form
    663,423.31/994,850.64 = 308,400.31/x
  3. Step 3: Cross multiply
    663,423.31x = 994,850.64 × 308,400.31
  4. Step 4: Simplify right side
    663,423.31x = 306,812,245,779.70
  5. Step 5: Solve for x
    x = 306,812,245,779.70/663,423.31
  6. Step 6: Final answer
    x = 462,468.29

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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.