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Finding the Fourth Proportional to 528,821.73, 792,689.63 and 208,843.92

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Solution

The fourth proportional to 528,821.73, 792,689.63 and 208,843.92 is: 313,051.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,821.73 : 792,689.63 = 208,843.92 : x
  2. Step 2: Convert to fraction form
    528,821.73/792,689.63 = 208,843.92/x
  3. Step 3: Cross multiply
    528,821.73x = 792,689.63 × 208,843.92
  4. Step 4: Simplify right side
    528,821.73x = 165,548,408,628.33
  5. Step 5: Solve for x
    x = 165,548,408,628.33/528,821.73
  6. Step 6: Final answer
    x = 313,051.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.