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Finding the Fourth Proportional to 451,469.85, 623,091.79 and 279,442.71

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Solution

The fourth proportional to 451,469.85, 623,091.79 and 279,442.71 is: 385,670.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,469.85 : 623,091.79 = 279,442.71 : x
  2. Step 2: Convert to fraction form
    451,469.85/623,091.79 = 279,442.71/x
  3. Step 3: Cross multiply
    451,469.85x = 623,091.79 × 279,442.71
  4. Step 4: Simplify right side
    451,469.85x = 174,118,458,725.65
  5. Step 5: Solve for x
    x = 174,118,458,725.65/451,469.85
  6. Step 6: Final answer
    x = 385,670.18

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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.