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Finding the Fourth Proportional to 1,282,765.43, 1,770,404.09 and 738,795.35

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Solution

The fourth proportional to 1,282,765.43, 1,770,404.09 and 738,795.35 is: 1,019,645.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,765.43 : 1,770,404.09 = 738,795.35 : x
  2. Step 2: Convert to fraction form
    1,282,765.43/1,770,404.09 = 738,795.35/x
  3. Step 3: Cross multiply
    1,282,765.43x = 1,770,404.09 × 738,795.35
  4. Step 4: Simplify right side
    1,282,765.43x = 1,307,966,296,766.98
  5. Step 5: Solve for x
    x = 1,307,966,296,766.98/1,282,765.43
  6. Step 6: Final answer
    x = 1,019,645.74

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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.