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Finding the Fourth Proportional to 626,174.70, 864,120.65 and 339,694.84

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Solution

The fourth proportional to 626,174.70, 864,120.65 and 339,694.84 is: 468,778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,174.70 : 864,120.65 = 339,694.84 : x
  2. Step 2: Convert to fraction form
    626,174.70/864,120.65 = 339,694.84/x
  3. Step 3: Cross multiply
    626,174.70x = 864,120.65 × 339,694.84
  4. Step 4: Simplify right side
    626,174.70x = 293,537,325,942.45
  5. Step 5: Solve for x
    x = 293,537,325,942.45/626,174.70
  6. Step 6: Final answer
    x = 468,778.64

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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.