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Finding the Fourth Proportional to 645,796.31, 969,293.00 and 326,172.62

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Solution

The fourth proportional to 645,796.31, 969,293.00 and 326,172.62 is: 489,561.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,796.31 : 969,293.00 = 326,172.62 : x
  2. Step 2: Convert to fraction form
    645,796.31/969,293.00 = 326,172.62/x
  3. Step 3: Cross multiply
    645,796.31x = 969,293.00 × 326,172.62
  4. Step 4: Simplify right side
    645,796.31x = 316,156,840,596.32
  5. Step 5: Solve for x
    x = 316,156,840,596.32/645,796.31
  6. Step 6: Final answer
    x = 489,561.24

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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.