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Finding the Fourth Proportional to 504,889.71, 696,747.75 and 278,535.21

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Solution

The fourth proportional to 504,889.71, 696,747.75 and 278,535.21 is: 384,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,889.71 : 696,747.75 = 278,535.21 : x
  2. Step 2: Convert to fraction form
    504,889.71/696,747.75 = 278,535.21/x
  3. Step 3: Cross multiply
    504,889.71x = 696,747.75 × 278,535.21
  4. Step 4: Simplify right side
    504,889.71x = 194,068,780,863.28
  5. Step 5: Solve for x
    x = 194,068,780,863.28/504,889.71
  6. Step 6: Final answer
    x = 384,378.56

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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.