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Finding the Fourth Proportional to 505,712.62, 697,883.89 and 276,273.74

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Solution

The fourth proportional to 505,712.62, 697,883.89 and 276,273.74 is: 381,258.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,712.62 : 697,883.89 = 276,273.74 : x
  2. Step 2: Convert to fraction form
    505,712.62/697,883.89 = 276,273.74/x
  3. Step 3: Cross multiply
    505,712.62x = 697,883.89 × 276,273.74
  4. Step 4: Simplify right side
    505,712.62x = 192,806,992,376.05
  5. Step 5: Solve for x
    x = 192,806,992,376.05/505,712.62
  6. Step 6: Final answer
    x = 381,258.02

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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.