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Finding the Fourth Proportional to 1,318,205.22, 1,819,052.55 and 745,211.22

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Solution

The fourth proportional to 1,318,205.22, 1,819,052.55 and 745,211.22 is: 1,028,351.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,205.22 : 1,819,052.55 = 745,211.22 : x
  2. Step 2: Convert to fraction form
    1,318,205.22/1,819,052.55 = 745,211.22/x
  3. Step 3: Cross multiply
    1,318,205.22x = 1,819,052.55 × 745,211.22
  4. Step 4: Simplify right side
    1,318,205.22x = 1,355,578,370,029.61
  5. Step 5: Solve for x
    x = 1,355,578,370,029.61/1,318,205.22
  6. Step 6: Final answer
    x = 1,028,351.54

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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.