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Finding the Fourth Proportional to 619,858.98, 855,358.44 and 347,874.34

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Solution

The fourth proportional to 619,858.98, 855,358.44 and 347,874.34 is: 480,040.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,858.98 : 855,358.44 = 347,874.34 : x
  2. Step 2: Convert to fraction form
    619,858.98/855,358.44 = 347,874.34/x
  3. Step 3: Cross multiply
    619,858.98x = 855,358.44 × 347,874.34
  4. Step 4: Simplify right side
    619,858.98x = 297,557,253,609.74
  5. Step 5: Solve for x
    x = 297,557,253,609.74/619,858.98
  6. Step 6: Final answer
    x = 480,040.24

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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.