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Finding the Fourth Proportional to 6,389,229.90, 8,817,494.31 and 3,488,889.90

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Solution

The fourth proportional to 6,389,229.90, 8,817,494.31 and 3,488,889.90 is: 4,814,863.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389,229.90 : 8,817,494.31 = 3,488,889.90 : x
  2. Step 2: Convert to fraction form
    6,389,229.90/8,817,494.31 = 3,488,889.90/x
  3. Step 3: Cross multiply
    6,389,229.90x = 8,817,494.31 × 3,488,889.90
  4. Step 4: Simplify right side
    6,389,229.90x = 30,763,266,841,466.47
  5. Step 5: Solve for x
    x = 30,763,266,841,466.47/6,389,229.90
  6. Step 6: Final answer
    x = 4,814,863.03

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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.