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Finding the Fourth Proportional to 722,611.60, 997,161.66 and 395,859.88

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Solution

The fourth proportional to 722,611.60, 997,161.66 and 395,859.88 is: 546,263.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,611.60 : 997,161.66 = 395,859.88 : x
  2. Step 2: Convert to fraction form
    722,611.60/997,161.66 = 395,859.88/x
  3. Step 3: Cross multiply
    722,611.60x = 997,161.66 × 395,859.88
  4. Step 4: Simplify right side
    722,611.60x = 394,736,295,068.20
  5. Step 5: Solve for x
    x = 394,736,295,068.20/722,611.60
  6. Step 6: Final answer
    x = 546,263.44

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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.