Home / 551,865.96-828,378.09-489,087.72

Finding the Fourth Proportional to 551,865.96, 828,378.09 and 489,087.72

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Solution

The fourth proportional to 551,865.96, 828,378.09 and 489,087.72 is: 734,144.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,865.96 : 828,378.09 = 489,087.72 : x
  2. Step 2: Convert to fraction form
    551,865.96/828,378.09 = 489,087.72/x
  3. Step 3: Cross multiply
    551,865.96x = 828,378.09 × 489,087.72
  4. Step 4: Simplify right side
    551,865.96x = 405,149,551,336.06
  5. Step 5: Solve for x
    x = 405,149,551,336.06/551,865.96
  6. Step 6: Final answer
    x = 734,144.85

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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.