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Finding the Fourth Proportional to 644,164.58, 889,018.17 and 368,548.04

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Solution

The fourth proportional to 644,164.58, 889,018.17 and 368,548.04 is: 508,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,164.58 : 889,018.17 = 368,548.04 : x
  2. Step 2: Convert to fraction form
    644,164.58/889,018.17 = 368,548.04/x
  3. Step 3: Cross multiply
    644,164.58x = 889,018.17 × 368,548.04
  4. Step 4: Simplify right side
    644,164.58x = 327,645,904,077.89
  5. Step 5: Solve for x
    x = 327,645,904,077.89/644,164.58
  6. Step 6: Final answer
    x = 508,636.95

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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.