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Finding the Fourth Proportional to 482,818.92, 665,827.25 and 289,195.71

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Solution

The fourth proportional to 482,818.92, 665,827.25 and 289,195.71 is: 398,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,818.92 : 665,827.25 = 289,195.71 : x
  2. Step 2: Convert to fraction form
    482,818.92/665,827.25 = 289,195.71/x
  3. Step 3: Cross multiply
    482,818.92x = 665,827.25 × 289,195.71
  4. Step 4: Simplify right side
    482,818.92x = 192,554,384,301.10
  5. Step 5: Solve for x
    x = 192,554,384,301.10/482,818.92
  6. Step 6: Final answer
    x = 398,812.84

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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.