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Finding the Fourth Proportional to 644,318.29, 889,229.73 and 368,701.60

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Solution

The fourth proportional to 644,318.29, 889,229.73 and 368,701.60 is: 508,848.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,318.29 : 889,229.73 = 368,701.60 : x
  2. Step 2: Convert to fraction form
    644,318.29/889,229.73 = 368,701.60/x
  3. Step 3: Cross multiply
    644,318.29x = 889,229.73 × 368,701.60
  4. Step 4: Simplify right side
    644,318.29x = 327,860,424,218.57
  5. Step 5: Solve for x
    x = 327,860,424,218.57/644,318.29
  6. Step 6: Final answer
    x = 508,848.54

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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.