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Finding the Fourth Proportional to 6,449,382.72, 8,899,881.27 and 3,509,211.90

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Solution

The fourth proportional to 6,449,382.72, 8,899,881.27 and 3,509,211.90 is: 4,842,567.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,449,382.72 : 8,899,881.27 = 3,509,211.90 : x
  2. Step 2: Convert to fraction form
    6,449,382.72/8,899,881.27 = 3,509,211.90/x
  3. Step 3: Cross multiply
    6,449,382.72x = 8,899,881.27 × 3,509,211.90
  4. Step 4: Simplify right side
    6,449,382.72x = 31,231,569,261,271.11
  5. Step 5: Solve for x
    x = 31,231,569,261,271.11/6,449,382.72
  6. Step 6: Final answer
    x = 4,842,567.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.