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Finding the Fourth Proportional to 528,276.60, 792,998.10 and 328,822.20

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Solution

The fourth proportional to 528,276.60, 792,998.10 and 328,822.20 is: 493,596.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,276.60 : 792,998.10 = 328,822.20 : x
  2. Step 2: Convert to fraction form
    528,276.60/792,998.10 = 328,822.20/x
  3. Step 3: Cross multiply
    528,276.60x = 792,998.10 × 328,822.20
  4. Step 4: Simplify right side
    528,276.60x = 260,755,379,837.82
  5. Step 5: Solve for x
    x = 260,755,379,837.82/528,276.60
  6. Step 6: Final answer
    x = 493,596.31

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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.