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Finding the Fourth Proportional to 551,618.78, 828,673.80 and 327,126.48

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Solution

The fourth proportional to 551,618.78, 828,673.80 and 327,126.48 is: 491,428.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,618.78 : 828,673.80 = 327,126.48 : x
  2. Step 2: Convert to fraction form
    551,618.78/828,673.80 = 327,126.48/x
  3. Step 3: Cross multiply
    551,618.78x = 828,673.80 × 327,126.48
  4. Step 4: Simplify right side
    551,618.78x = 271,081,142,035.50
  5. Step 5: Solve for x
    x = 271,081,142,035.50/551,618.78
  6. Step 6: Final answer
    x = 491,428.41

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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.