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Finding the Fourth Proportional to 425,893.70, 587,438.79 and 345,324.62

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Solution

The fourth proportional to 425,893.70, 587,438.79 and 345,324.62 is: 476,309.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,893.70 : 587,438.79 = 345,324.62 : x
  2. Step 2: Convert to fraction form
    425,893.70/587,438.79 = 345,324.62/x
  3. Step 3: Cross multiply
    425,893.70x = 587,438.79 × 345,324.62
  4. Step 4: Simplify right side
    425,893.70x = 202,857,076,930.01
  5. Step 5: Solve for x
    x = 202,857,076,930.01/425,893.70
  6. Step 6: Final answer
    x = 476,309.18

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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.