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Finding the Fourth Proportional to 633,869.75, 874,747.15 and 347,383.69

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Solution

The fourth proportional to 633,869.75, 874,747.15 and 347,383.69 is: 479,393.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,869.75 : 874,747.15 = 347,383.69 : x
  2. Step 2: Convert to fraction form
    633,869.75/874,747.15 = 347,383.69/x
  3. Step 3: Cross multiply
    633,869.75x = 874,747.15 × 347,383.69
  4. Step 4: Simplify right side
    633,869.75x = 303,872,889,728.66
  5. Step 5: Solve for x
    x = 303,872,889,728.66/633,869.75
  6. Step 6: Final answer
    x = 479,393.26

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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.