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Finding the Fourth Proportional to 8,655,984, 11,945,609.64 and 4,788,438.48

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Solution

The fourth proportional to 8,655,984, 11,945,609.64 and 4,788,438.48 is: 6,608,239.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655,984 : 11,945,609.64 = 4,788,438.48 : x
  2. Step 2: Convert to fraction form
    8,655,984/11,945,609.64 = 4,788,438.48/x
  3. Step 3: Cross multiply
    8,655,984x = 11,945,609.64 × 4,788,438.48
  4. Step 4: Simplify right side
    8,655,984x = 57,200,816,867,234.95
  5. Step 5: Solve for x
    x = 57,200,816,867,234.95/8,655,984
  6. Step 6: Final answer
    x = 6,608,239.67

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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.