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Finding the Fourth Proportional to 580,636.35, 870,946.83 and 281,143.71

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Solution

The fourth proportional to 580,636.35, 870,946.83 and 281,143.71 is: 421,711.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,636.35 : 870,946.83 = 281,143.71 : x
  2. Step 2: Convert to fraction form
    580,636.35/870,946.83 = 281,143.71/x
  3. Step 3: Cross multiply
    580,636.35x = 870,946.83 × 281,143.71
  4. Step 4: Simplify right side
    580,636.35x = 244,861,222,998.94
  5. Step 5: Solve for x
    x = 244,861,222,998.94/580,636.35
  6. Step 6: Final answer
    x = 421,711.84

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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.