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Finding the Fourth Proportional to 529,383, 730,548.54 and 290,919

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Solution

The fourth proportional to 529,383, 730,548.54 and 290,919 is: 401,468.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,383 : 730,548.54 = 290,919 : x
  2. Step 2: Convert to fraction form
    529,383/730,548.54 = 290,919/x
  3. Step 3: Cross multiply
    529,383x = 730,548.54 × 290,919
  4. Step 4: Simplify right side
    529,383x = 212,530,450,708.26
  5. Step 5: Solve for x
    x = 212,530,450,708.26/529,383
  6. Step 6: Final answer
    x = 401,468.22

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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.