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Finding the Fourth Proportional to 9,978,929.86, 13,770,911.54 and 5,395,240.30

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Solution

The fourth proportional to 9,978,929.86, 13,770,911.54 and 5,395,240.30 is: 7,445,425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,978,929.86 : 13,770,911.54 = 5,395,240.30 : x
  2. Step 2: Convert to fraction form
    9,978,929.86/13,770,911.54 = 5,395,240.30/x
  3. Step 3: Cross multiply
    9,978,929.86x = 13,770,911.54 × 5,395,240.30
  4. Step 4: Simplify right side
    9,978,929.86x = 74,297,376,908,343.05
  5. Step 5: Solve for x
    x = 74,297,376,908,343.05/9,978,929.86
  6. Step 6: Final answer
    x = 7,445,425.31

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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.