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Finding the Fourth Proportional to 671,392.60, 926,717.44 and 438,853.33

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Solution

The fourth proportional to 671,392.60, 926,717.44 and 438,853.33 is: 605,745.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,392.60 : 926,717.44 = 438,853.33 : x
  2. Step 2: Convert to fraction form
    671,392.60/926,717.44 = 438,853.33/x
  3. Step 3: Cross multiply
    671,392.60x = 926,717.44 × 438,853.33
  4. Step 4: Simplify right side
    671,392.60x = 406,693,035,945.41
  5. Step 5: Solve for x
    x = 406,693,035,945.41/671,392.60
  6. Step 6: Final answer
    x = 605,745.49

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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.