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Finding the Fourth Proportional to 658,627.21, 908,906.51 and 356,821.21

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Solution

The fourth proportional to 658,627.21, 908,906.51 and 356,821.21 is: 492,413.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,627.21 : 908,906.51 = 356,821.21 : x
  2. Step 2: Convert to fraction form
    658,627.21/908,906.51 = 356,821.21/x
  3. Step 3: Cross multiply
    658,627.21x = 908,906.51 × 356,821.21
  4. Step 4: Simplify right side
    658,627.21x = 324,317,118,890.97
  5. Step 5: Solve for x
    x = 324,317,118,890.97/658,627.21
  6. Step 6: Final answer
    x = 492,413.79

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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.