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Finding the Fourth Proportional to 2,638,862.40, 3,958,293.60 and 2,638,862.40

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Solution

The fourth proportional to 2,638,862.40, 3,958,293.60 and 2,638,862.40 is: 3,958,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638,862.40 : 3,958,293.60 = 2,638,862.40 : x
  2. Step 2: Convert to fraction form
    2,638,862.40/3,958,293.60 = 2,638,862.40/x
  3. Step 3: Cross multiply
    2,638,862.40x = 3,958,293.60 × 2,638,862.40
  4. Step 4: Simplify right side
    2,638,862.40x = 10,445,392,149,200.64
  5. Step 5: Solve for x
    x = 10,445,392,149,200.64/2,638,862.40
  6. Step 6: Final answer
    x = 3,958,293.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.