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Finding the Fourth Proportional to 638,020.25, 880,487.87 and 366,137.87

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Solution

The fourth proportional to 638,020.25, 880,487.87 and 366,137.87 is: 505,281.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,020.25 : 880,487.87 = 366,137.87 : x
  2. Step 2: Convert to fraction form
    638,020.25/880,487.87 = 366,137.87/x
  3. Step 3: Cross multiply
    638,020.25x = 880,487.87 × 366,137.87
  4. Step 4: Simplify right side
    638,020.25x = 322,379,947,049.51
  5. Step 5: Solve for x
    x = 322,379,947,049.51/638,020.25
  6. Step 6: Final answer
    x = 505,281.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.