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Finding the Fourth Proportional to 7,952,866.78, 11,928,406.81 and 2,196,418.76

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Solution

The fourth proportional to 7,952,866.78, 11,928,406.81 and 2,196,418.76 is: 3,294,381.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,952,866.78 : 11,928,406.81 = 2,196,418.76 : x
  2. Step 2: Convert to fraction form
    7,952,866.78/11,928,406.81 = 2,196,418.76/x
  3. Step 3: Cross multiply
    7,952,866.78x = 11,928,406.81 × 2,196,418.76
  4. Step 4: Simplify right side
    7,952,866.78x = 26,199,776,494,395.75
  5. Step 5: Solve for x
    x = 26,199,776,494,395.75/7,952,866.78
  6. Step 6: Final answer
    x = 3,294,381.41

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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.