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Finding the Fourth Proportional to 901,920.78, 1,244,650.37 and 494,048.03

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Solution

The fourth proportional to 901,920.78, 1,244,650.37 and 494,048.03 is: 681,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,920.78 : 1,244,650.37 = 494,048.03 : x
  2. Step 2: Convert to fraction form
    901,920.78/1,244,650.37 = 494,048.03/x
  3. Step 3: Cross multiply
    901,920.78x = 1,244,650.37 × 494,048.03
  4. Step 4: Simplify right side
    901,920.78x = 614,917,054,643.78
  5. Step 5: Solve for x
    x = 614,917,054,643.78/901,920.78
  6. Step 6: Final answer
    x = 681,786.10

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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.