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Finding the Fourth Proportional to 1,204,399, 1,662,070.62 and 667,855

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Solution

The fourth proportional to 1,204,399, 1,662,070.62 and 667,855 is: 921,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204,399 : 1,662,070.62 = 667,855 : x
  2. Step 2: Convert to fraction form
    1,204,399/1,662,070.62 = 667,855/x
  3. Step 3: Cross multiply
    1,204,399x = 1,662,070.62 × 667,855
  4. Step 4: Simplify right side
    1,204,399x = 1,110,022,173,920.10
  5. Step 5: Solve for x
    x = 1,110,022,173,920.10/1,204,399
  6. Step 6: Final answer
    x = 921,639.90

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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.