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Finding the Fourth Proportional to 505,867.67, 698,088.95 and 276,419.92

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Solution

The fourth proportional to 505,867.67, 698,088.95 and 276,419.92 is: 381,454.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,867.67 : 698,088.95 = 276,419.92 : x
  2. Step 2: Convert to fraction form
    505,867.67/698,088.95 = 276,419.92/x
  3. Step 3: Cross multiply
    505,867.67x = 698,088.95 × 276,419.92
  4. Step 4: Simplify right side
    505,867.67x = 192,965,688,221.44
  5. Step 5: Solve for x
    x = 192,965,688,221.44/505,867.67
  6. Step 6: Final answer
    x = 381,454.87

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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.