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Finding the Fourth Proportional to 553,378.62, 828,471.42 and 324,982.11

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Solution

The fourth proportional to 553,378.62, 828,471.42 and 324,982.11 is: 486,535.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,378.62 : 828,471.42 = 324,982.11 : x
  2. Step 2: Convert to fraction form
    553,378.62/828,471.42 = 324,982.11/x
  3. Step 3: Cross multiply
    553,378.62x = 828,471.42 × 324,982.11
  4. Step 4: Simplify right side
    553,378.62x = 269,238,390,146.30
  5. Step 5: Solve for x
    x = 269,238,390,146.30/553,378.62
  6. Step 6: Final answer
    x = 486,535.58

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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.