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Finding the Fourth Proportional to 553,469.47, 828,329.44 and 340,372.54

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Solution

The fourth proportional to 553,469.47, 828,329.44 and 340,372.54 is: 509,405.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,469.47 : 828,329.44 = 340,372.54 : x
  2. Step 2: Convert to fraction form
    553,469.47/828,329.44 = 340,372.54/x
  3. Step 3: Cross multiply
    553,469.47x = 828,329.44 × 340,372.54
  4. Step 4: Simplify right side
    553,469.47x = 281,940,598,873.04
  5. Step 5: Solve for x
    x = 281,940,598,873.04/553,469.47
  6. Step 6: Final answer
    x = 509,405.87

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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.