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Finding the Fourth Proportional to 493,889.94, 681,554.04 and 289,937.58

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Solution

The fourth proportional to 493,889.94, 681,554.04 and 289,937.58 is: 400,105.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,889.94 : 681,554.04 = 289,937.58 : x
  2. Step 2: Convert to fraction form
    493,889.94/681,554.04 = 289,937.58/x
  3. Step 3: Cross multiply
    493,889.94x = 681,554.04 × 289,937.58
  4. Step 4: Simplify right side
    493,889.94x = 197,608,128,996.82
  5. Step 5: Solve for x
    x = 197,608,128,996.82/493,889.94
  6. Step 6: Final answer
    x = 400,105.60

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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.