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Finding the Fourth Proportional to 645,387.55, 967,750.83 and 379,228.03

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Solution

The fourth proportional to 645,387.55, 967,750.83 and 379,228.03 is: 568,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,387.55 : 967,750.83 = 379,228.03 : x
  2. Step 2: Convert to fraction form
    645,387.55/967,750.83 = 379,228.03/x
  3. Step 3: Cross multiply
    645,387.55x = 967,750.83 × 379,228.03
  4. Step 4: Simplify right side
    645,387.55x = 366,998,240,791.77
  5. Step 5: Solve for x
    x = 366,998,240,791.77/645,387.55
  6. Step 6: Final answer
    x = 568,647.85

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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.