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Finding the Fourth Proportional to 449,499.17, 619,730.02 and 320,584.63

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Solution

The fourth proportional to 449,499.17, 619,730.02 and 320,584.63 is: 441,993.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,499.17 : 619,730.02 = 320,584.63 : x
  2. Step 2: Convert to fraction form
    449,499.17/619,730.02 = 320,584.63/x
  3. Step 3: Cross multiply
    449,499.17x = 619,730.02 × 320,584.63
  4. Step 4: Simplify right side
    449,499.17x = 198,675,920,336.99
  5. Step 5: Solve for x
    x = 198,675,920,336.99/449,499.17
  6. Step 6: Final answer
    x = 441,993.97

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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.