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Finding the Fourth Proportional to 663,708.60, 996,081.30 and 308,766.60

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Solution

The fourth proportional to 663,708.60, 996,081.30 and 308,766.60 is: 463,391.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,708.60 : 996,081.30 = 308,766.60 : x
  2. Step 2: Convert to fraction form
    663,708.60/996,081.30 = 308,766.60/x
  3. Step 3: Cross multiply
    663,708.60x = 996,081.30 × 308,766.60
  4. Step 4: Simplify right side
    663,708.60x = 307,556,636,324.58
  5. Step 5: Solve for x
    x = 307,556,636,324.58/663,708.60
  6. Step 6: Final answer
    x = 463,391.07

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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.