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Finding the Fourth Proportional to 8,739,353.20, 13,109,029.80 and 3,956,384.20

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Solution

The fourth proportional to 8,739,353.20, 13,109,029.80 and 3,956,384.20 is: 5,934,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739,353.20 : 13,109,029.80 = 3,956,384.20 : x
  2. Step 2: Convert to fraction form
    8,739,353.20/13,109,029.80 = 3,956,384.20/x
  3. Step 3: Cross multiply
    8,739,353.20x = 13,109,029.80 × 3,956,384.20
  4. Step 4: Simplify right side
    8,739,353.20x = 51,864,358,378,049.16
  5. Step 5: Solve for x
    x = 51,864,358,378,049.16/8,739,353.20
  6. Step 6: Final answer
    x = 5,934,576.30

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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.