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Finding the Fourth Proportional to 1,121,858, 1,682,787 and 333,890

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Solution

The fourth proportional to 1,121,858, 1,682,787 and 333,890 is: 500,835

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,858 : 1,682,787 = 333,890 : x
  2. Step 2: Convert to fraction form
    1,121,858/1,682,787 = 333,890/x
  3. Step 3: Cross multiply
    1,121,858x = 1,682,787 × 333,890
  4. Step 4: Simplify right side
    1,121,858x = 561,865,751,430
  5. Step 5: Solve for x
    x = 561,865,751,430/1,121,858
  6. Step 6: Final answer
    x = 500,835

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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.