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Finding the Fourth Proportional to 487,680.54, 673,049.79 and 280,955.94

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Solution

The fourth proportional to 487,680.54, 673,049.79 and 280,955.94 is: 387,748.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,680.54 : 673,049.79 = 280,955.94 : x
  2. Step 2: Convert to fraction form
    487,680.54/673,049.79 = 280,955.94/x
  3. Step 3: Cross multiply
    487,680.54x = 673,049.79 × 280,955.94
  4. Step 4: Simplify right side
    487,680.54x = 189,097,336,416.25
  5. Step 5: Solve for x
    x = 189,097,336,416.25/487,680.54
  6. Step 6: Final answer
    x = 387,748.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.