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Finding the Fourth Proportional to 482,609.02, 666,031.95 and 278,668.54

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Solution

The fourth proportional to 482,609.02, 666,031.95 and 278,668.54 is: 384,580.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,609.02 : 666,031.95 = 278,668.54 : x
  2. Step 2: Convert to fraction form
    482,609.02/666,031.95 = 278,668.54/x
  3. Step 3: Cross multiply
    482,609.02x = 666,031.95 × 278,668.54
  4. Step 4: Simplify right side
    482,609.02x = 185,602,151,099.85
  5. Step 5: Solve for x
    x = 185,602,151,099.85/482,609.02
  6. Step 6: Final answer
    x = 384,580.78

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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.