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Finding the Fourth Proportional to 504,976.50, 696,882.15 and 278,636.58

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Solution

The fourth proportional to 504,976.50, 696,882.15 and 278,636.58 is: 384,526.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,976.50 : 696,882.15 = 278,636.58 : x
  2. Step 2: Convert to fraction form
    504,976.50/696,882.15 = 278,636.58/x
  3. Step 3: Cross multiply
    504,976.50x = 696,882.15 × 278,636.58
  4. Step 4: Simplify right side
    504,976.50x = 194,176,858,939.05
  5. Step 5: Solve for x
    x = 194,176,858,939.05/504,976.50
  6. Step 6: Final answer
    x = 384,526.53

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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.