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Finding the Fourth Proportional to 551,015.20, 827,008.80 and 326,094.40

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Solution

The fourth proportional to 551,015.20, 827,008.80 and 326,094.40 is: 489,429.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,015.20 : 827,008.80 = 326,094.40 : x
  2. Step 2: Convert to fraction form
    551,015.20/827,008.80 = 326,094.40/x
  3. Step 3: Cross multiply
    551,015.20x = 827,008.80 × 326,094.40
  4. Step 4: Simplify right side
    551,015.20x = 269,682,938,430.72
  5. Step 5: Solve for x
    x = 269,682,938,430.72/551,015.20
  6. Step 6: Final answer
    x = 489,429.22

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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.