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Finding the Fourth Proportional to 7,149,863.22, 9,866,741.07 and 3,886,483.80

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Solution

The fourth proportional to 7,149,863.22, 9,866,741.07 and 3,886,483.80 is: 5,363,309.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149,863.22 : 9,866,741.07 = 3,886,483.80 : x
  2. Step 2: Convert to fraction form
    7,149,863.22/9,866,741.07 = 3,886,483.80/x
  3. Step 3: Cross multiply
    7,149,863.22x = 9,866,741.07 × 3,886,483.80
  4. Step 4: Simplify right side
    7,149,863.22x = 38,346,929,327,349.66
  5. Step 5: Solve for x
    x = 38,346,929,327,349.66/7,149,863.22
  6. Step 6: Final answer
    x = 5,363,309.50

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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.