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Finding the Fourth Proportional to 612,058.37, 844,586.78 and 340,109.03

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Solution

The fourth proportional to 612,058.37, 844,586.78 and 340,109.03 is: 469,320.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,058.37 : 844,586.78 = 340,109.03 : x
  2. Step 2: Convert to fraction form
    612,058.37/844,586.78 = 340,109.03/x
  3. Step 3: Cross multiply
    612,058.37x = 844,586.78 × 340,109.03
  4. Step 4: Simplify right side
    612,058.37x = 287,251,584,573.14
  5. Step 5: Solve for x
    x = 287,251,584,573.14/612,058.37
  6. Step 6: Final answer
    x = 469,320.58

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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.