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Finding the Fourth Proportional to 7,117,978.03, 9,822,757.65 and 3,854,717.06

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Solution

The fourth proportional to 7,117,978.03, 9,822,757.65 and 3,854,717.06 is: 5,319,481.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117,978.03 : 9,822,757.65 = 3,854,717.06 : x
  2. Step 2: Convert to fraction form
    7,117,978.03/9,822,757.65 = 3,854,717.06/x
  3. Step 3: Cross multiply
    7,117,978.03x = 9,822,757.65 × 3,854,717.06
  4. Step 4: Simplify right side
    7,117,978.03x = 37,863,951,458,655.71
  5. Step 5: Solve for x
    x = 37,863,951,458,655.71/7,117,978.03
  6. Step 6: Final answer
    x = 5,319,481.36

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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.