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Finding the Fourth Proportional to 558,909, 771,294.42 and 304,245

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Solution

The fourth proportional to 558,909, 771,294.42 and 304,245 is: 419,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,909 : 771,294.42 = 304,245 : x
  2. Step 2: Convert to fraction form
    558,909/771,294.42 = 304,245/x
  3. Step 3: Cross multiply
    558,909x = 771,294.42 × 304,245
  4. Step 4: Simplify right side
    558,909x = 234,662,470,812.90
  5. Step 5: Solve for x
    x = 234,662,470,812.90/558,909
  6. Step 6: Final answer
    x = 419,858.10

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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.