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Finding the Fourth Proportional to 619,630.55, 855,175.22 and 347,714.46

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Solution

The fourth proportional to 619,630.55, 855,175.22 and 347,714.46 is: 479,893.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,630.55 : 855,175.22 = 347,714.46 : x
  2. Step 2: Convert to fraction form
    619,630.55/855,175.22 = 347,714.46/x
  3. Step 3: Cross multiply
    619,630.55x = 855,175.22 × 347,714.46
  4. Step 4: Simplify right side
    619,630.55x = 297,356,789,827.68
  5. Step 5: Solve for x
    x = 297,356,789,827.68/619,630.55
  6. Step 6: Final answer
    x = 479,893.69

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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.