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Finding the Fourth Proportional to 644,249.61, 889,083.12 and 368,652.29

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Solution

The fourth proportional to 644,249.61, 889,083.12 and 368,652.29 is: 508,750.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,249.61 : 889,083.12 = 368,652.29 : x
  2. Step 2: Convert to fraction form
    644,249.61/889,083.12 = 368,652.29/x
  3. Step 3: Cross multiply
    644,249.61x = 889,083.12 × 368,652.29
  4. Step 4: Simplify right side
    644,249.61x = 327,762,523,742.93
  5. Step 5: Solve for x
    x = 327,762,523,742.93/644,249.61
  6. Step 6: Final answer
    x = 508,750.83

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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.