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Finding the Fourth Proportional to 885,339, 1,328,013.36 and 220,491

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Solution

The fourth proportional to 885,339, 1,328,013.36 and 220,491 is: 330,737.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,339 : 1,328,013.36 = 220,491 : x
  2. Step 2: Convert to fraction form
    885,339/1,328,013.36 = 220,491/x
  3. Step 3: Cross multiply
    885,339x = 1,328,013.36 × 220,491
  4. Step 4: Simplify right side
    885,339x = 292,814,993,759.76
  5. Step 5: Solve for x
    x = 292,814,993,759.76/885,339
  6. Step 6: Final answer
    x = 330,737.71

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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.