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Finding the Fourth Proportional to 623,793.72, 860,840.46 and 344,399.88

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Solution

The fourth proportional to 623,793.72, 860,840.46 and 344,399.88 is: 475,274.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,793.72 : 860,840.46 = 344,399.88 : x
  2. Step 2: Convert to fraction form
    623,793.72/860,840.46 = 344,399.88/x
  3. Step 3: Cross multiply
    623,793.72x = 860,840.46 × 344,399.88
  4. Step 4: Simplify right side
    623,793.72x = 296,473,351,123.15
  5. Step 5: Solve for x
    x = 296,473,351,123.15/623,793.72
  6. Step 6: Final answer
    x = 475,274.66

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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.