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Finding the Fourth Proportional to 539,916.60, 809,874.90 and 434,940.60

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Solution

The fourth proportional to 539,916.60, 809,874.90 and 434,940.60 is: 652,410.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,916.60 : 809,874.90 = 434,940.60 : x
  2. Step 2: Convert to fraction form
    539,916.60/809,874.90 = 434,940.60/x
  3. Step 3: Cross multiply
    539,916.60x = 809,874.90 × 434,940.60
  4. Step 4: Simplify right side
    539,916.60x = 352,247,474,930.94
  5. Step 5: Solve for x
    x = 352,247,474,930.94/539,916.60
  6. Step 6: Final answer
    x = 652,410.90

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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.