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Finding the Fourth Proportional to 438,857.44, 605,424.56 and 384,976.24

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Solution

The fourth proportional to 438,857.44, 605,424.56 and 384,976.24 is: 531,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,857.44 : 605,424.56 = 384,976.24 : x
  2. Step 2: Convert to fraction form
    438,857.44/605,424.56 = 384,976.24/x
  3. Step 3: Cross multiply
    438,857.44x = 605,424.56 × 384,976.24
  4. Step 4: Simplify right side
    438,857.44x = 233,074,070,712.45
  5. Step 5: Solve for x
    x = 233,074,070,712.45/438,857.44
  6. Step 6: Final answer
    x = 531,092.90

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1.5x scale

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.