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Finding the Fourth Proportional to 2,815,801.52, 3,889,013.52 and 1,908,808.88

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Solution

The fourth proportional to 2,815,801.52, 3,889,013.52 and 1,908,808.88 is: 2,636,330.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815,801.52 : 3,889,013.52 = 1,908,808.88 : x
  2. Step 2: Convert to fraction form
    2,815,801.52/3,889,013.52 = 1,908,808.88/x
  3. Step 3: Cross multiply
    2,815,801.52x = 3,889,013.52 × 1,908,808.88
  4. Step 4: Simplify right side
    2,815,801.52x = 7,423,383,541,416.06
  5. Step 5: Solve for x
    x = 7,423,383,541,416.06/2,815,801.52
  6. Step 6: Final answer
    x = 2,636,330.54

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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.