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Finding the Fourth Proportional to 1,325,394, 1,988,091 and 328,122

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Solution

The fourth proportional to 1,325,394, 1,988,091 and 328,122 is: 492,183

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,394 : 1,988,091 = 328,122 : x
  2. Step 2: Convert to fraction form
    1,325,394/1,988,091 = 328,122/x
  3. Step 3: Cross multiply
    1,325,394x = 1,988,091 × 328,122
  4. Step 4: Simplify right side
    1,325,394x = 652,336,395,102
  5. Step 5: Solve for x
    x = 652,336,395,102/1,325,394
  6. Step 6: Final answer
    x = 492,183

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.