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Finding the Fourth Proportional to 6,391,720.60, 9,587,580.90 and 3,405,736.60

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Solution

The fourth proportional to 6,391,720.60, 9,587,580.90 and 3,405,736.60 is: 5,108,604.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391,720.60 : 9,587,580.90 = 3,405,736.60 : x
  2. Step 2: Convert to fraction form
    6,391,720.60/9,587,580.90 = 3,405,736.60/x
  3. Step 3: Cross multiply
    6,391,720.60x = 9,587,580.90 × 3,405,736.60
  4. Step 4: Simplify right side
    6,391,720.60x = 32,652,775,176,590.94
  5. Step 5: Solve for x
    x = 32,652,775,176,590.94/6,391,720.60
  6. Step 6: Final answer
    x = 5,108,604.90

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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.