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Finding the Fourth Proportional to 502,578.28, 693,559.56 and 287,719.96

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Solution

The fourth proportional to 502,578.28, 693,559.56 and 287,719.96 is: 397,054.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,578.28 : 693,559.56 = 287,719.96 : x
  2. Step 2: Convert to fraction form
    502,578.28/693,559.56 = 287,719.96/x
  3. Step 3: Cross multiply
    502,578.28x = 693,559.56 × 287,719.96
  4. Step 4: Simplify right side
    502,578.28x = 199,550,928,860.82
  5. Step 5: Solve for x
    x = 199,550,928,860.82/502,578.28
  6. Step 6: Final answer
    x = 397,054.42

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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.