Home / 665,936.10-998,977.05-644,940.90

Finding the Fourth Proportional to 665,936.10, 998,977.05 and 644,940.90

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Solution

The fourth proportional to 665,936.10, 998,977.05 and 644,940.90 is: 967,481.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,936.10 : 998,977.05 = 644,940.90 : x
  2. Step 2: Convert to fraction form
    665,936.10/998,977.05 = 644,940.90/x
  3. Step 3: Cross multiply
    665,936.10x = 998,977.05 × 644,940.90
  4. Step 4: Simplify right side
    665,936.10x = 644,281,157,706.35
  5. Step 5: Solve for x
    x = 644,281,157,706.35/665,936.10
  6. Step 6: Final answer
    x = 967,481.95

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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.