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Finding the Fourth Proportional to 647,573.20, 971,359.80 and 395,630.80

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Solution

The fourth proportional to 647,573.20, 971,359.80 and 395,630.80 is: 593,446.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,573.20 : 971,359.80 = 395,630.80 : x
  2. Step 2: Convert to fraction form
    647,573.20/971,359.80 = 395,630.80/x
  3. Step 3: Cross multiply
    647,573.20x = 971,359.80 × 395,630.80
  4. Step 4: Simplify right side
    647,573.20x = 384,299,854,761.84
  5. Step 5: Solve for x
    x = 384,299,854,761.84/647,573.20
  6. Step 6: Final answer
    x = 593,446.20

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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.