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Finding the Fourth Proportional to 6,491,879.69, 8,958,761.40 and 3,551,643.50

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Solution

The fourth proportional to 6,491,879.69, 8,958,761.40 and 3,551,643.50 is: 4,901,250.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,491,879.69 : 8,958,761.40 = 3,551,643.50 : x
  2. Step 2: Convert to fraction form
    6,491,879.69/8,958,761.40 = 3,551,643.50/x
  3. Step 3: Cross multiply
    6,491,879.69x = 8,958,761.40 × 3,551,643.50
  4. Step 4: Simplify right side
    6,491,879.69x = 31,818,326,649,567.09
  5. Step 5: Solve for x
    x = 31,818,326,649,567.09/6,491,879.69
  6. Step 6: Final answer
    x = 4,901,250.21

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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.