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Finding the Fourth Proportional to 504,978.52, 696,884.94 and 278,638.60

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Solution

The fourth proportional to 504,978.52, 696,884.94 and 278,638.60 is: 384,529.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,978.52 : 696,884.94 = 278,638.60 : x
  2. Step 2: Convert to fraction form
    504,978.52/696,884.94 = 278,638.60/x
  3. Step 3: Cross multiply
    504,978.52x = 696,884.94 × 278,638.60
  4. Step 4: Simplify right side
    504,978.52x = 194,179,044,042.68
  5. Step 5: Solve for x
    x = 194,179,044,042.68/504,978.52
  6. Step 6: Final answer
    x = 384,529.31

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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.