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Finding the Fourth Proportional to 900,759, 1,243,063.22 and 492,896.57

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Solution

The fourth proportional to 900,759, 1,243,063.22 and 492,896.57 is: 680,205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,759 : 1,243,063.22 = 492,896.57 : x
  2. Step 2: Convert to fraction form
    900,759/1,243,063.22 = 492,896.57/x
  3. Step 3: Cross multiply
    900,759x = 1,243,063.22 × 492,896.57
  4. Step 4: Simplify right side
    900,759x = 612,701,598,074.33
  5. Step 5: Solve for x
    x = 612,701,598,074.33/900,759
  6. Step 6: Final answer
    x = 680,205.91

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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.