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Finding the Fourth Proportional to 551,838.93, 761,745.84 and 322,470.78

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Solution

The fourth proportional to 551,838.93, 761,745.84 and 322,470.78 is: 445,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,838.93 : 761,745.84 = 322,470.78 : x
  2. Step 2: Convert to fraction form
    551,838.93/761,745.84 = 322,470.78/x
  3. Step 3: Cross multiply
    551,838.93x = 761,745.84 × 322,470.78
  4. Step 4: Simplify right side
    551,838.93x = 245,640,775,186.56
  5. Step 5: Solve for x
    x = 245,640,775,186.56/551,838.93
  6. Step 6: Final answer
    x = 445,131.29

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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.