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Finding the Fourth Proportional to 482,817.92, 665,825.87 and 289,194.71

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Solution

The fourth proportional to 482,817.92, 665,825.87 and 289,194.71 is: 398,811.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,817.92 : 665,825.87 = 289,194.71 : x
  2. Step 2: Convert to fraction form
    482,817.92/665,825.87 = 289,194.71/x
  3. Step 3: Cross multiply
    482,817.92x = 665,825.87 × 289,194.71
  4. Step 4: Simplify right side
    482,817.92x = 192,553,316,056.02
  5. Step 5: Solve for x
    x = 192,553,316,056.02/482,817.92
  6. Step 6: Final answer
    x = 398,811.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.