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Finding the Fourth Proportional to 555,721.35, 766,896.62 and 301,072.53

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Solution

The fourth proportional to 555,721.35, 766,896.62 and 301,072.53 is: 415,480.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,721.35 : 766,896.62 = 301,072.53 : x
  2. Step 2: Convert to fraction form
    555,721.35/766,896.62 = 301,072.53/x
  3. Step 3: Cross multiply
    555,721.35x = 766,896.62 × 301,072.53
  4. Step 4: Simplify right side
    555,721.35x = 230,891,505,631.85
  5. Step 5: Solve for x
    x = 230,891,505,631.85/555,721.35
  6. Step 6: Final answer
    x = 415,480.72

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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.