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Finding the Fourth Proportional to 11,978,195.40, 17,968,070.70 and 6,309,491.40

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Solution

The fourth proportional to 11,978,195.40, 17,968,070.70 and 6,309,491.40 is: 9,464,646.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,978,195.40 : 17,968,070.70 = 6,309,491.40 : x
  2. Step 2: Convert to fraction form
    11,978,195.40/17,968,070.70 = 6,309,491.40/x
  3. Step 3: Cross multiply
    11,978,195.40x = 17,968,070.70 × 6,309,491.40
  4. Step 4: Simplify right side
    11,978,195.40x = 113,369,387,556,241.98
  5. Step 5: Solve for x
    x = 113,369,387,556,241.98/11,978,195.40
  6. Step 6: Final answer
    x = 9,464,646.70

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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.