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Finding the Fourth Proportional to 504,856.25, 696,653.21 and 278,487.17

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Solution

The fourth proportional to 504,856.25, 696,653.21 and 278,487.17 is: 384,285.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,856.25 : 696,653.21 = 278,487.17 : x
  2. Step 2: Convert to fraction form
    504,856.25/696,653.21 = 278,487.17/x
  3. Step 3: Cross multiply
    504,856.25x = 696,653.21 × 278,487.17
  4. Step 4: Simplify right side
    504,856.25x = 194,008,978,137.27
  5. Step 5: Solve for x
    x = 194,008,978,137.27/504,856.25
  6. Step 6: Final answer
    x = 384,285.59

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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.