Home / 298,383,028.49-408,786,207.66-287,199,702.54

Finding the Fourth Proportional to 298,383,028.49, 408,786,207.66 and 287,199,702.54

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Solution

The fourth proportional to 298,383,028.49, 408,786,207.66 and 287,199,702.54 is: 393,464,996.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,383,028.49 : 408,786,207.66 = 287,199,702.54 : x
  2. Step 2: Convert to fraction form
    298,383,028.49/408,786,207.66 = 287,199,702.54/x
  3. Step 3: Cross multiply
    298,383,028.49x = 408,786,207.66 × 287,199,702.54
  4. Step 4: Simplify right side
    298,383,028.49x = 117,403,277,242,406,688
  5. Step 5: Solve for x
    x = 117,403,277,242,406,688/298,383,028.49
  6. Step 6: Final answer
    x = 393,464,996.44

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.