Home / 639,715.72-882,801.84-353,229.52

Finding the Fourth Proportional to 639,715.72, 882,801.84 and 353,229.52

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Solution

The fourth proportional to 639,715.72, 882,801.84 and 353,229.52 is: 487,453.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,715.72 : 882,801.84 = 353,229.52 : x
  2. Step 2: Convert to fraction form
    639,715.72/882,801.84 = 353,229.52/x
  3. Step 3: Cross multiply
    639,715.72x = 882,801.84 × 353,229.52
  4. Step 4: Simplify right side
    639,715.72x = 311,831,670,198.32
  5. Step 5: Solve for x
    x = 311,831,670,198.32/639,715.72
  6. Step 6: Final answer
    x = 487,453.51

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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.