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Finding the Fourth Proportional to 1,973,791.80, 2,960,687.70 and 1,300,633.20

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Solution

The fourth proportional to 1,973,791.80, 2,960,687.70 and 1,300,633.20 is: 1,950,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,973,791.80 : 2,960,687.70 = 1,300,633.20 : x
  2. Step 2: Convert to fraction form
    1,973,791.80/2,960,687.70 = 1,300,633.20/x
  3. Step 3: Cross multiply
    1,973,791.80x = 2,960,687.70 × 1,300,633.20
  4. Step 4: Simplify right side
    1,973,791.80x = 3,850,768,717,451.64
  5. Step 5: Solve for x
    x = 3,850,768,717,451.64/1,973,791.80
  6. Step 6: Final answer
    x = 1,950,949.80

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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.