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Finding the Fourth Proportional to 475,861.38, 656,743.56 and 284,874.72

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Solution

The fourth proportional to 475,861.38, 656,743.56 and 284,874.72 is: 393,159.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,861.38 : 656,743.56 = 284,874.72 : x
  2. Step 2: Convert to fraction form
    475,861.38/656,743.56 = 284,874.72/x
  3. Step 3: Cross multiply
    475,861.38x = 656,743.56 × 284,874.72
  4. Step 4: Simplify right side
    475,861.38x = 187,089,637,766.80
  5. Step 5: Solve for x
    x = 187,089,637,766.80/475,861.38
  6. Step 6: Final answer
    x = 393,159.95

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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.