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Finding the Fourth Proportional to 551,021.60, 826,532.40 and 489,020.15

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Solution

The fourth proportional to 551,021.60, 826,532.40 and 489,020.15 is: 733,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,021.60 : 826,532.40 = 489,020.15 : x
  2. Step 2: Convert to fraction form
    551,021.60/826,532.40 = 489,020.15/x
  3. Step 3: Cross multiply
    551,021.60x = 826,532.40 × 489,020.15
  4. Step 4: Simplify right side
    551,021.60x = 404,190,998,227.86
  5. Step 5: Solve for x
    x = 404,190,998,227.86/551,021.60
  6. Step 6: Final answer
    x = 733,530.23

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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.