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Finding the Fourth Proportional to 678,907.73, 1,018,361.44 and 173,469.66

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Solution

The fourth proportional to 678,907.73, 1,018,361.44 and 173,469.66 is: 260,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,907.73 : 1,018,361.44 = 173,469.66 : x
  2. Step 2: Convert to fraction form
    678,907.73/1,018,361.44 = 173,469.66/x
  3. Step 3: Cross multiply
    678,907.73x = 1,018,361.44 × 173,469.66
  4. Step 4: Simplify right side
    678,907.73x = 176,654,812,753.91
  5. Step 5: Solve for x
    x = 176,654,812,753.91/678,907.73
  6. Step 6: Final answer
    x = 260,204.45

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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.