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Finding the Fourth Proportional to 617,342.66, 851,884.31 and 345,389.21

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Solution

The fourth proportional to 617,342.66, 851,884.31 and 345,389.21 is: 476,609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,342.66 : 851,884.31 = 345,389.21 : x
  2. Step 2: Convert to fraction form
    617,342.66/851,884.31 = 345,389.21/x
  3. Step 3: Cross multiply
    617,342.66x = 851,884.31 × 345,389.21
  4. Step 4: Simplify right side
    617,342.66x = 294,231,645,446.35
  5. Step 5: Solve for x
    x = 294,231,645,446.35/617,342.66
  6. Step 6: Final answer
    x = 476,609.94

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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.