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Finding the Fourth Proportional to 808,820.82, 1,213,260.39 and 303,330.60

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Solution

The fourth proportional to 808,820.82, 1,213,260.39 and 303,330.60 is: 455,006.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,820.82 : 1,213,260.39 = 303,330.60 : x
  2. Step 2: Convert to fraction form
    808,820.82/1,213,260.39 = 303,330.60/x
  3. Step 3: Cross multiply
    808,820.82x = 1,213,260.39 × 303,330.60
  4. Step 4: Simplify right side
    808,820.82x = 368,019,002,054.93
  5. Step 5: Solve for x
    x = 368,019,002,054.93/808,820.82
  6. Step 6: Final answer
    x = 455,006.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.