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Finding the Fourth Proportional to 8,494,027.80, 12,741,041.70 and 5,308,978.20

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Solution

The fourth proportional to 8,494,027.80, 12,741,041.70 and 5,308,978.20 is: 7,963,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,494,027.80 : 12,741,041.70 = 5,308,978.20 : x
  2. Step 2: Convert to fraction form
    8,494,027.80/12,741,041.70 = 5,308,978.20/x
  3. Step 3: Cross multiply
    8,494,027.80x = 12,741,041.70 × 5,308,978.20
  4. Step 4: Simplify right side
    8,494,027.80x = 67,641,912,630,590.94
  5. Step 5: Solve for x
    x = 67,641,912,630,590.94/8,494,027.80
  6. Step 6: Final answer
    x = 7,963,467.30

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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.