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Finding the Fourth Proportional to 499,871.17, 689,104.56 and 356,382.10

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Solution

The fourth proportional to 499,871.17, 689,104.56 and 356,382.10 is: 491,295.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,871.17 : 689,104.56 = 356,382.10 : x
  2. Step 2: Convert to fraction form
    499,871.17/689,104.56 = 356,382.10/x
  3. Step 3: Cross multiply
    499,871.17x = 689,104.56 × 356,382.10
  4. Step 4: Simplify right side
    499,871.17x = 245,584,530,212.38
  5. Step 5: Solve for x
    x = 245,584,530,212.38/499,871.17
  6. Step 6: Final answer
    x = 491,295.65

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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.