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Finding the Fourth Proportional to 553,580.82, 763,997.96 and 338,862.78

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Solution

The fourth proportional to 553,580.82, 763,997.96 and 338,862.78 is: 467,665.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,580.82 : 763,997.96 = 338,862.78 : x
  2. Step 2: Convert to fraction form
    553,580.82/763,997.96 = 338,862.78/x
  3. Step 3: Cross multiply
    553,580.82x = 763,997.96 × 338,862.78
  4. Step 4: Simplify right side
    553,580.82x = 258,890,473,487.09
  5. Step 5: Solve for x
    x = 258,890,473,487.09/553,580.82
  6. Step 6: Final answer
    x = 467,665.18

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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.