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Finding the Fourth Proportional to 454,951.56, 681,873.90 and 321,870.18

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Solution

The fourth proportional to 454,951.56, 681,873.90 and 321,870.18 is: 482,413.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,951.56 : 681,873.90 = 321,870.18 : x
  2. Step 2: Convert to fraction form
    454,951.56/681,873.90 = 321,870.18/x
  3. Step 3: Cross multiply
    454,951.56x = 681,873.90 × 321,870.18
  4. Step 4: Simplify right side
    454,951.56x = 219,474,874,930.30
  5. Step 5: Solve for x
    x = 219,474,874,930.30/454,951.56
  6. Step 6: Final answer
    x = 482,413.72

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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.