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Finding the Fourth Proportional to 551,866.71, 828,379.22 and 489,088.47

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Solution

The fourth proportional to 551,866.71, 828,379.22 and 489,088.47 is: 734,145.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,866.71 : 828,379.22 = 489,088.47 : x
  2. Step 2: Convert to fraction form
    551,866.71/828,379.22 = 489,088.47/x
  3. Step 3: Cross multiply
    551,866.71x = 828,379.22 × 489,088.47
  4. Step 4: Simplify right side
    551,866.71x = 405,150,722,844.15
  5. Step 5: Solve for x
    x = 405,150,722,844.15/551,866.71
  6. Step 6: Final answer
    x = 734,145.97

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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.