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Finding the Fourth Proportional to 617,015.47, 925,639.02 and 280,079.80

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Solution

The fourth proportional to 617,015.47, 925,639.02 and 280,079.80 is: 420,172.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,015.47 : 925,639.02 = 280,079.80 : x
  2. Step 2: Convert to fraction form
    617,015.47/925,639.02 = 280,079.80/x
  3. Step 3: Cross multiply
    617,015.47x = 925,639.02 × 280,079.80
  4. Step 4: Simplify right side
    617,015.47x = 259,252,790,330.00
  5. Step 5: Solve for x
    x = 259,252,790,330.00/617,015.47
  6. Step 6: Final answer
    x = 420,172.27

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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.