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Finding the Fourth Proportional to 12,787,480.80, 19,149,728.40 and 6,048,021.60

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Solution

The fourth proportional to 12,787,480.80, 19,149,728.40 and 6,048,021.60 is: 9,057,137.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787,480.80 : 19,149,728.40 = 6,048,021.60 : x
  2. Step 2: Convert to fraction form
    12,787,480.80/19,149,728.40 = 6,048,021.60/x
  3. Step 3: Cross multiply
    12,787,480.80x = 19,149,728.40 × 6,048,021.60
  4. Step 4: Simplify right side
    12,787,480.80x = 115,817,970,997,333.42
  5. Step 5: Solve for x
    x = 115,817,970,997,333.42/12,787,480.80
  6. Step 6: Final answer
    x = 9,057,137.43

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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.