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Finding the Fourth Proportional to 8,129,762.64, 12,194,648.28 and 2,064,949.20

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Solution

The fourth proportional to 8,129,762.64, 12,194,648.28 and 2,064,949.20 is: 3,097,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129,762.64 : 12,194,648.28 = 2,064,949.20 : x
  2. Step 2: Convert to fraction form
    8,129,762.64/12,194,648.28 = 2,064,949.20/x
  3. Step 3: Cross multiply
    8,129,762.64x = 12,194,648.28 × 2,064,949.20
  4. Step 4: Simplify right side
    8,129,762.64x = 25,181,329,210,067.38
  5. Step 5: Solve for x
    x = 25,181,329,210,067.38/8,129,762.64
  6. Step 6: Final answer
    x = 3,097,424.90

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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.