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Finding the Fourth Proportional to 1,313,586.03, 1,812,747.78 and 709,974.03

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Solution

The fourth proportional to 1,313,586.03, 1,812,747.78 and 709,974.03 is: 979,763.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,586.03 : 1,812,747.78 = 709,974.03 : x
  2. Step 2: Convert to fraction form
    1,313,586.03/1,812,747.78 = 709,974.03/x
  3. Step 3: Cross multiply
    1,313,586.03x = 1,812,747.78 × 709,974.03
  4. Step 4: Simplify right side
    1,313,586.03x = 1,287,003,846,740.15
  5. Step 5: Solve for x
    x = 1,287,003,846,740.15/1,313,586.03
  6. Step 6: Final answer
    x = 979,763.65

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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.