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Finding the Fourth Proportional to 624,694.20, 936,764.28 and 287,653.20

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Solution

The fourth proportional to 624,694.20, 936,764.28 and 287,653.20 is: 431,352.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,694.20 : 936,764.28 = 287,653.20 : x
  2. Step 2: Convert to fraction form
    624,694.20/936,764.28 = 287,653.20/x
  3. Step 3: Cross multiply
    624,694.20x = 936,764.28 × 287,653.20
  4. Step 4: Simplify right side
    624,694.20x = 269,463,242,787.70
  5. Step 5: Solve for x
    x = 269,463,242,787.70/624,694.20
  6. Step 6: Final answer
    x = 431,352.24

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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.