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Finding the Fourth Proportional to 504,387.72, 696,054.42 and 278,037

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Solution

The fourth proportional to 504,387.72, 696,054.42 and 278,037 is: 383,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,387.72 : 696,054.42 = 278,037 : x
  2. Step 2: Convert to fraction form
    504,387.72/696,054.42 = 278,037/x
  3. Step 3: Cross multiply
    504,387.72x = 696,054.42 × 278,037
  4. Step 4: Simplify right side
    504,387.72x = 193,528,882,773.54
  5. Step 5: Solve for x
    x = 193,528,882,773.54/504,387.72
  6. Step 6: Final answer
    x = 383,690.71

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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.