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Finding the Fourth Proportional to 647,630.44, 971,527.04 and 347,698.76

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Solution

The fourth proportional to 647,630.44, 971,527.04 and 347,698.76 is: 521,591.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,630.44 : 971,527.04 = 347,698.76 : x
  2. Step 2: Convert to fraction form
    647,630.44/971,527.04 = 347,698.76/x
  3. Step 3: Cross multiply
    647,630.44x = 971,527.04 × 347,698.76
  4. Step 4: Simplify right side
    647,630.44x = 337,798,747,114.47
  5. Step 5: Solve for x
    x = 337,798,747,114.47/647,630.44
  6. Step 6: Final answer
    x = 521,591.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.