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Finding the Fourth Proportional to 7,978,794.93, 11,969,873.75 and 2,587,024.89

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Solution

The fourth proportional to 7,978,794.93, 11,969,873.75 and 2,587,024.89 is: 3,881,082.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,794.93 : 11,969,873.75 = 2,587,024.89 : x
  2. Step 2: Convert to fraction form
    7,978,794.93/11,969,873.75 = 2,587,024.89/x
  3. Step 3: Cross multiply
    7,978,794.93x = 11,969,873.75 × 2,587,024.89
  4. Step 4: Simplify right side
    7,978,794.93x = 30,966,361,308,472.51
  5. Step 5: Solve for x
    x = 30,966,361,308,472.51/7,978,794.93
  6. Step 6: Final answer
    x = 3,881,082.49

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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.