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Finding the Fourth Proportional to 501,180.80, 751,623.57 and 388,987.70

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Solution

The fourth proportional to 501,180.80, 751,623.57 and 388,987.70 is: 583,366.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,180.80 : 751,623.57 = 388,987.70 : x
  2. Step 2: Convert to fraction form
    501,180.80/751,623.57 = 388,987.70/x
  3. Step 3: Cross multiply
    501,180.80x = 751,623.57 × 388,987.70
  4. Step 4: Simplify right side
    501,180.80x = 292,372,320,001.97
  5. Step 5: Solve for x
    x = 292,372,320,001.97/501,180.80
  6. Step 6: Final answer
    x = 583,366.97

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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.