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Finding the Fourth Proportional to 1,203,678, 1,661,075.64 and 667,134

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Solution

The fourth proportional to 1,203,678, 1,661,075.64 and 667,134 is: 920,644.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,678 : 1,661,075.64 = 667,134 : x
  2. Step 2: Convert to fraction form
    1,203,678/1,661,075.64 = 667,134/x
  3. Step 3: Cross multiply
    1,203,678x = 1,661,075.64 × 667,134
  4. Step 4: Simplify right side
    1,203,678x = 1,108,160,036,015.76
  5. Step 5: Solve for x
    x = 1,108,160,036,015.76/1,203,678
  6. Step 6: Final answer
    x = 920,644.92

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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.