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Finding the Fourth Proportional to 3,982,728.80, 5,973,315.60 and 1,323,336.80

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Solution

The fourth proportional to 3,982,728.80, 5,973,315.60 and 1,323,336.80 is: 1,984,746.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982,728.80 : 5,973,315.60 = 1,323,336.80 : x
  2. Step 2: Convert to fraction form
    3,982,728.80/5,973,315.60 = 1,323,336.80/x
  3. Step 3: Cross multiply
    3,982,728.80x = 5,973,315.60 × 1,323,336.80
  4. Step 4: Simplify right side
    3,982,728.80x = 7,904,708,351,494.08
  5. Step 5: Solve for x
    x = 7,904,708,351,494.08/3,982,728.80
  6. Step 6: Final answer
    x = 1,984,746.83

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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.