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Finding the Fourth Proportional to 633,872.90, 874,739.58 and 347,392.30

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Solution

The fourth proportional to 633,872.90, 874,739.58 and 347,392.30 is: 479,398.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,872.90 : 874,739.58 = 347,392.30 : x
  2. Step 2: Convert to fraction form
    633,872.90/874,739.58 = 347,392.30/x
  3. Step 3: Cross multiply
    633,872.90x = 874,739.58 × 347,392.30
  4. Step 4: Simplify right side
    633,872.90x = 303,877,794,597.23
  5. Step 5: Solve for x
    x = 303,877,794,597.23/633,872.90
  6. Step 6: Final answer
    x = 479,398.62

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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.