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Finding the Fourth Proportional to 551,916.20, 827,218.20 and 495,491.60

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Solution

The fourth proportional to 551,916.20, 827,218.20 and 495,491.60 is: 742,648.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,916.20 : 827,218.20 = 495,491.60 : x
  2. Step 2: Convert to fraction form
    551,916.20/827,218.20 = 495,491.60/x
  3. Step 3: Cross multiply
    551,916.20x = 827,218.20 × 495,491.60
  4. Step 4: Simplify right side
    551,916.20x = 409,879,669,467.12
  5. Step 5: Solve for x
    x = 409,879,669,467.12/551,916.20
  6. Step 6: Final answer
    x = 742,648.38

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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.