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Finding the Fourth Proportional to 1,420,749.51, 1,960,672.80 and 848,122.03

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Solution

The fourth proportional to 1,420,749.51, 1,960,672.80 and 848,122.03 is: 1,170,431.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,749.51 : 1,960,672.80 = 848,122.03 : x
  2. Step 2: Convert to fraction form
    1,420,749.51/1,960,672.80 = 848,122.03/x
  3. Step 3: Cross multiply
    1,420,749.51x = 1,960,672.80 × 848,122.03
  4. Step 4: Simplify right side
    1,420,749.51x = 1,662,889,795,301.78
  5. Step 5: Solve for x
    x = 1,662,889,795,301.78/1,420,749.51
  6. Step 6: Final answer
    x = 1,170,431.37

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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.