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Finding the Fourth Proportional to 663,426.81, 994,855.89 and 308,403.81

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Solution

The fourth proportional to 663,426.81, 994,855.89 and 308,403.81 is: 462,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,426.81 : 994,855.89 = 308,403.81 : x
  2. Step 2: Convert to fraction form
    663,426.81/994,855.89 = 308,403.81/x
  3. Step 3: Cross multiply
    663,426.81x = 994,855.89 × 308,403.81
  4. Step 4: Simplify right side
    663,426.81x = 306,817,346,876.94
  5. Step 5: Solve for x
    x = 306,817,346,876.94/663,426.81
  6. Step 6: Final answer
    x = 462,473.54

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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.