Home / 639,164.24-882,400.20-384,578

Finding the Fourth Proportional to 639,164.24, 882,400.20 and 384,578

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Solution

The fourth proportional to 639,164.24, 882,400.20 and 384,578 is: 530,930.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,164.24 : 882,400.20 = 384,578 : x
  2. Step 2: Convert to fraction form
    639,164.24/882,400.20 = 384,578/x
  3. Step 3: Cross multiply
    639,164.24x = 882,400.20 × 384,578
  4. Step 4: Simplify right side
    639,164.24x = 339,351,704,115.60
  5. Step 5: Solve for x
    x = 339,351,704,115.60/639,164.24
  6. Step 6: Final answer
    x = 530,930.37

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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.