Home / 1,278,108-1,917,196.56-391,644

Finding the Fourth Proportional to 1,278,108, 1,917,196.56 and 391,644

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Solution

The fourth proportional to 1,278,108, 1,917,196.56 and 391,644 is: 587,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,108 : 1,917,196.56 = 391,644 : x
  2. Step 2: Convert to fraction form
    1,278,108/1,917,196.56 = 391,644/x
  3. Step 3: Cross multiply
    1,278,108x = 1,917,196.56 × 391,644
  4. Step 4: Simplify right side
    1,278,108x = 750,858,529,544.64
  5. Step 5: Solve for x
    x = 750,858,529,544.64/1,278,108
  6. Step 6: Final answer
    x = 587,476.59

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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.