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Finding the Fourth Proportional to 8,603,648.82, 12,905,473.73 and 3,212,720.28

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Solution

The fourth proportional to 8,603,648.82, 12,905,473.73 and 3,212,720.28 is: 4,819,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603,648.82 : 12,905,473.73 = 3,212,720.28 : x
  2. Step 2: Convert to fraction form
    8,603,648.82/12,905,473.73 = 3,212,720.28/x
  3. Step 3: Cross multiply
    8,603,648.82x = 12,905,473.73 × 3,212,720.28
  4. Step 4: Simplify right side
    8,603,648.82x = 41,461,677,159,314.64
  5. Step 5: Solve for x
    x = 41,461,677,159,314.64/8,603,648.82
  6. Step 6: Final answer
    x = 4,819,080.60

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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.