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Finding the Fourth Proportional to 1,040,976, 1,561,464 and 253,008

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Solution

The fourth proportional to 1,040,976, 1,561,464 and 253,008 is: 379,512

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,976 : 1,561,464 = 253,008 : x
  2. Step 2: Convert to fraction form
    1,040,976/1,561,464 = 253,008/x
  3. Step 3: Cross multiply
    1,040,976x = 1,561,464 × 253,008
  4. Step 4: Simplify right side
    1,040,976x = 395,062,883,712
  5. Step 5: Solve for x
    x = 395,062,883,712/1,040,976
  6. Step 6: Final answer
    x = 379,512

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.