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Finding the Fourth Proportional to 901,800, 1,244,523.12 and 499,392

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Solution

The fourth proportional to 901,800, 1,244,523.12 and 499,392 is: 689,182.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,800 : 1,244,523.12 = 499,392 : x
  2. Step 2: Convert to fraction form
    901,800/1,244,523.12 = 499,392/x
  3. Step 3: Cross multiply
    901,800x = 1,244,523.12 × 499,392
  4. Step 4: Simplify right side
    901,800x = 621,504,889,943.04
  5. Step 5: Solve for x
    x = 621,504,889,943.04/901,800
  6. Step 6: Final answer
    x = 689,182.62

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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.