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Finding the Fourth Proportional to 644,277.62, 965,300.13 and 391,027.48

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Solution

The fourth proportional to 644,277.62, 965,300.13 and 391,027.48 is: 585,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,277.62 : 965,300.13 = 391,027.48 : x
  2. Step 2: Convert to fraction form
    644,277.62/965,300.13 = 391,027.48/x
  3. Step 3: Cross multiply
    644,277.62x = 965,300.13 × 391,027.48
  4. Step 4: Simplify right side
    644,277.62x = 377,458,874,864.32
  5. Step 5: Solve for x
    x = 377,458,874,864.32/644,277.62
  6. Step 6: Final answer
    x = 585,863.70

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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.