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Finding the Fourth Proportional to 2,159,487.54, 2,978,289.41 and 1,616,914.71

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Solution

The fourth proportional to 2,159,487.54, 2,978,289.41 and 1,616,914.71 is: 2,229,992.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159,487.54 : 2,978,289.41 = 1,616,914.71 : x
  2. Step 2: Convert to fraction form
    2,159,487.54/2,978,289.41 = 1,616,914.71/x
  3. Step 3: Cross multiply
    2,159,487.54x = 2,978,289.41 × 1,616,914.71
  4. Step 4: Simplify right side
    2,159,487.54x = 4,815,639,949,581.65
  5. Step 5: Solve for x
    x = 4,815,639,949,581.65/2,159,487.54
  6. Step 6: Final answer
    x = 2,229,992.01

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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.