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Finding the Fourth Proportional to 667,602, 997,737.78 and 488,065.44

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Solution

The fourth proportional to 667,602, 997,737.78 and 488,065.44 is: 729,418.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,602 : 997,737.78 = 488,065.44 : x
  2. Step 2: Convert to fraction form
    667,602/997,737.78 = 488,065.44/x
  3. Step 3: Cross multiply
    667,602x = 997,737.78 × 488,065.44
  4. Step 4: Simplify right side
    667,602x = 486,961,328,600.32
  5. Step 5: Solve for x
    x = 486,961,328,600.32/667,602
  6. Step 6: Final answer
    x = 729,418.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.