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Finding the Fourth Proportional to 1,281,653.62, 1,769,449.46 and 798,872.69

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Solution

The fourth proportional to 1,281,653.62, 1,769,449.46 and 798,872.69 is: 1,102,922.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,653.62 : 1,769,449.46 = 798,872.69 : x
  2. Step 2: Convert to fraction form
    1,281,653.62/1,769,449.46 = 798,872.69/x
  3. Step 3: Cross multiply
    1,281,653.62x = 1,769,449.46 × 798,872.69
  4. Step 4: Simplify right side
    1,281,653.62x = 1,413,564,850,358.51
  5. Step 5: Solve for x
    x = 1,413,564,850,358.51/1,281,653.62
  6. Step 6: Final answer
    x = 1,102,922.69

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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.