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Finding the Fourth Proportional to 408,724.28, 612,527.52 and 308,802.68

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Solution

The fourth proportional to 408,724.28, 612,527.52 and 308,802.68 is: 462,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,724.28 : 612,527.52 = 308,802.68 : x
  2. Step 2: Convert to fraction form
    408,724.28/612,527.52 = 308,802.68/x
  3. Step 3: Cross multiply
    408,724.28x = 612,527.52 × 308,802.68
  4. Step 4: Simplify right side
    408,724.28x = 189,150,139,749.75
  5. Step 5: Solve for x
    x = 189,150,139,749.75/408,724.28
  6. Step 6: Final answer
    x = 462,781.76

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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.