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Finding the Fourth Proportional to 488,818.38, 674,567.76 and 284,989.98

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Solution

The fourth proportional to 488,818.38, 674,567.76 and 284,989.98 is: 393,285.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,818.38 : 674,567.76 = 284,989.98 : x
  2. Step 2: Convert to fraction form
    488,818.38/674,567.76 = 284,989.98/x
  3. Step 3: Cross multiply
    488,818.38x = 674,567.76 × 284,989.98
  4. Step 4: Simplify right side
    488,818.38x = 192,245,052,431.05
  5. Step 5: Solve for x
    x = 192,245,052,431.05/488,818.38
  6. Step 6: Final answer
    x = 393,285.24

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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.