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Finding the Fourth Proportional to 2,159,502.88, 2,978,317.20 and 1,616,919.52

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Solution

The fourth proportional to 2,159,502.88, 2,978,317.20 and 1,616,919.52 is: 2,230,003.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159,502.88 : 2,978,317.20 = 1,616,919.52 : x
  2. Step 2: Convert to fraction form
    2,159,502.88/2,978,317.20 = 1,616,919.52/x
  3. Step 3: Cross multiply
    2,159,502.88x = 2,978,317.20 × 1,616,919.52
  4. Step 4: Simplify right side
    2,159,502.88x = 4,815,699,217,431.74
  5. Step 5: Solve for x
    x = 4,815,699,217,431.74/2,159,502.88
  6. Step 6: Final answer
    x = 2,230,003.61

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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.