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Finding the Fourth Proportional to 1,266,483.43, 1,747,761.20 and 685,719.42

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Solution

The fourth proportional to 1,266,483.43, 1,747,761.20 and 685,719.42 is: 946,300.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,483.43 : 1,747,761.20 = 685,719.42 : x
  2. Step 2: Convert to fraction form
    1,266,483.43/1,747,761.20 = 685,719.42/x
  3. Step 3: Cross multiply
    1,266,483.43x = 1,747,761.20 × 685,719.42
  4. Step 4: Simplify right side
    1,266,483.43x = 1,198,473,788,951.25
  5. Step 5: Solve for x
    x = 1,198,473,788,951.25/1,266,483.43
  6. Step 6: Final answer
    x = 946,300.41

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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.