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Finding the Fourth Proportional to 667,058.40, 999,702.96 and 351,738.48

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Solution

The fourth proportional to 667,058.40, 999,702.96 and 351,738.48 is: 527,141.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,058.40 : 999,702.96 = 351,738.48 : x
  2. Step 2: Convert to fraction form
    667,058.40/999,702.96 = 351,738.48/x
  3. Step 3: Cross multiply
    667,058.40x = 999,702.96 × 351,738.48
  4. Step 4: Simplify right side
    667,058.40x = 351,633,999,601.90
  5. Step 5: Solve for x
    x = 351,633,999,601.90/667,058.40
  6. Step 6: Final answer
    x = 527,141.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.