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Finding the Fourth Proportional to 658,729.08, 909,049.26 and 356,923

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Solution

The fourth proportional to 658,729.08, 909,049.26 and 356,923 is: 492,555.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,729.08 : 909,049.26 = 356,923 : x
  2. Step 2: Convert to fraction form
    658,729.08/909,049.26 = 356,923/x
  3. Step 3: Cross multiply
    658,729.08x = 909,049.26 × 356,923
  4. Step 4: Simplify right side
    658,729.08x = 324,460,589,026.98
  5. Step 5: Solve for x
    x = 324,460,589,026.98/658,729.08
  6. Step 6: Final answer
    x = 492,555.44

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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.