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Finding the Fourth Proportional to 638,349.65, 880,922.30 and 351,874.52

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Solution

The fourth proportional to 638,349.65, 880,922.30 and 351,874.52 is: 485,586.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,349.65 : 880,922.30 = 351,874.52 : x
  2. Step 2: Convert to fraction form
    638,349.65/880,922.30 = 351,874.52/x
  3. Step 3: Cross multiply
    638,349.65x = 880,922.30 × 351,874.52
  4. Step 4: Simplify right side
    638,349.65x = 309,974,108,609.27
  5. Step 5: Solve for x
    x = 309,974,108,609.27/638,349.65
  6. Step 6: Final answer
    x = 485,586.71

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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.