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Finding the Fourth Proportional to 3,430,978.92, 4,734,735.72 and 1,960,862.94

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Solution

The fourth proportional to 3,430,978.92, 4,734,735.72 and 1,960,862.94 is: 2,705,982.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430,978.92 : 4,734,735.72 = 1,960,862.94 : x
  2. Step 2: Convert to fraction form
    3,430,978.92/4,734,735.72 = 1,960,862.94/x
  3. Step 3: Cross multiply
    3,430,978.92x = 4,734,735.72 × 1,960,862.94
  4. Step 4: Simplify right side
    3,430,978.92x = 9,284,167,804,042.22
  5. Step 5: Solve for x
    x = 9,284,167,804,042.22/3,430,978.92
  6. Step 6: Final answer
    x = 2,705,982.18

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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.