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Finding the Fourth Proportional to 624,540.66, 936,670.85 and 287,257.28

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Solution

The fourth proportional to 624,540.66, 936,670.85 and 287,257.28 is: 430,821.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,540.66 : 936,670.85 = 287,257.28 : x
  2. Step 2: Convert to fraction form
    624,540.66/936,670.85 = 287,257.28/x
  3. Step 3: Cross multiply
    624,540.66x = 936,670.85 × 287,257.28
  4. Step 4: Simplify right side
    624,540.66x = 269,065,514,506.65
  5. Step 5: Solve for x
    x = 269,065,514,506.65/624,540.66
  6. Step 6: Final answer
    x = 430,821.45

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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.