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Finding the Fourth Proportional to 619,704.50, 855,224.82 and 347,758.34

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Solution

The fourth proportional to 619,704.50, 855,224.82 and 347,758.34 is: 479,924.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,704.50 : 855,224.82 = 347,758.34 : x
  2. Step 2: Convert to fraction form
    619,704.50/855,224.82 = 347,758.34/x
  3. Step 3: Cross multiply
    619,704.50x = 855,224.82 × 347,758.34
  4. Step 4: Simplify right side
    619,704.50x = 297,411,559,453.88
  5. Step 5: Solve for x
    x = 297,411,559,453.88/619,704.50
  6. Step 6: Final answer
    x = 479,924.81

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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.