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Finding the Fourth Proportional to 486,056.60, 729,084.90 and 276,104.60

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Solution

The fourth proportional to 486,056.60, 729,084.90 and 276,104.60 is: 414,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,056.60 : 729,084.90 = 276,104.60 : x
  2. Step 2: Convert to fraction form
    486,056.60/729,084.90 = 276,104.60/x
  3. Step 3: Cross multiply
    486,056.60x = 729,084.90 × 276,104.60
  4. Step 4: Simplify right side
    486,056.60x = 201,303,694,680.54
  5. Step 5: Solve for x
    x = 201,303,694,680.54/486,056.60
  6. Step 6: Final answer
    x = 414,156.90

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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.