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Finding the Fourth Proportional to 6,647,302.66, 9,972,636.15 and 1,854,991.30

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Solution

The fourth proportional to 6,647,302.66, 9,972,636.15 and 1,854,991.30 is: 2,782,956.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,647,302.66 : 9,972,636.15 = 1,854,991.30 : x
  2. Step 2: Convert to fraction form
    6,647,302.66/9,972,636.15 = 1,854,991.30/x
  3. Step 3: Cross multiply
    6,647,302.66x = 9,972,636.15 × 1,854,991.30
  4. Step 4: Simplify right side
    6,647,302.66x = 18,499,153,296,315.50
  5. Step 5: Solve for x
    x = 18,499,153,296,315.50/6,647,302.66
  6. Step 6: Final answer
    x = 2,782,956.37

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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.