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Finding the Fourth Proportional to 504,974.06, 696,878.79 and 278,634.14

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Solution

The fourth proportional to 504,974.06, 696,878.79 and 278,634.14 is: 384,523.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,974.06 : 696,878.79 = 278,634.14 : x
  2. Step 2: Convert to fraction form
    504,974.06/696,878.79 = 278,634.14/x
  3. Step 3: Cross multiply
    504,974.06x = 696,878.79 × 278,634.14
  4. Step 4: Simplify right side
    504,974.06x = 194,174,224,078.09
  5. Step 5: Solve for x
    x = 194,174,224,078.09/504,974.06
  6. Step 6: Final answer
    x = 384,523.16

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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.