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Finding the Fourth Proportional to 528,005.88, 790,861.85 and 324,983.16

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Solution

The fourth proportional to 528,005.88, 790,861.85 and 324,983.16 is: 486,768.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,005.88 : 790,861.85 = 324,983.16 : x
  2. Step 2: Convert to fraction form
    528,005.88/790,861.85 = 324,983.16/x
  3. Step 3: Cross multiply
    528,005.88x = 790,861.85 × 324,983.16
  4. Step 4: Simplify right side
    528,005.88x = 257,016,781,511.53
  5. Step 5: Solve for x
    x = 257,016,781,511.53/528,005.88
  6. Step 6: Final answer
    x = 486,768.79

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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.