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Finding the Fourth Proportional to 1,282,270.62, 1,769,379.31 and 738,583.23

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Solution

The fourth proportional to 1,282,270.62, 1,769,379.31 and 738,583.23 is: 1,019,156.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,270.62 : 1,769,379.31 = 738,583.23 : x
  2. Step 2: Convert to fraction form
    1,282,270.62/1,769,379.31 = 738,583.23/x
  3. Step 3: Cross multiply
    1,282,270.62x = 1,769,379.31 × 738,583.23
  4. Step 4: Simplify right side
    1,282,270.62x = 1,306,833,885,874.97
  5. Step 5: Solve for x
    x = 1,306,833,885,874.97/1,282,270.62
  6. Step 6: Final answer
    x = 1,019,156.07

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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.