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Finding the Fourth Proportional to 1,178,986.07, 1,768,917.03 and 818,967.26

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Solution

The fourth proportional to 1,178,986.07, 1,768,917.03 and 818,967.26 is: 1,228,755.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,986.07 : 1,768,917.03 = 818,967.26 : x
  2. Step 2: Convert to fraction form
    1,178,986.07/1,768,917.03 = 818,967.26/x
  3. Step 3: Cross multiply
    1,178,986.07x = 1,768,917.03 × 818,967.26
  4. Step 4: Simplify right side
    1,178,986.07x = 1,448,685,137,648.73
  5. Step 5: Solve for x
    x = 1,448,685,137,648.73/1,178,986.07
  6. Step 6: Final answer
    x = 1,228,755.09

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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.