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Finding the Fourth Proportional to 619,931.54, 855,469.89 and 347,974.10

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Solution

The fourth proportional to 619,931.54, 855,469.89 and 347,974.10 is: 480,184.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,931.54 : 855,469.89 = 347,974.10 : x
  2. Step 2: Convert to fraction form
    619,931.54/855,469.89 = 347,974.10/x
  3. Step 3: Cross multiply
    619,931.54x = 855,469.89 × 347,974.10
  4. Step 4: Simplify right side
    619,931.54x = 297,681,365,049.85
  5. Step 5: Solve for x
    x = 297,681,365,049.85/619,931.54
  6. Step 6: Final answer
    x = 480,184.26

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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.