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Finding the Fourth Proportional to 619,772.64, 855,288.02 and 344,131.09

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Solution

The fourth proportional to 619,772.64, 855,288.02 and 344,131.09 is: 474,901.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,772.64 : 855,288.02 = 344,131.09 : x
  2. Step 2: Convert to fraction form
    619,772.64/855,288.02 = 344,131.09/x
  3. Step 3: Cross multiply
    619,772.64x = 855,288.02 × 344,131.09
  4. Step 4: Simplify right side
    619,772.64x = 294,331,197,308.65
  5. Step 5: Solve for x
    x = 294,331,197,308.65/619,772.64
  6. Step 6: Final answer
    x = 474,901.89

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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.