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Finding the Fourth Proportional to 2,641,128.90, 3,961,693.35 and 2,641,128.90

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Solution

The fourth proportional to 2,641,128.90, 3,961,693.35 and 2,641,128.90 is: 3,961,693.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641,128.90 : 3,961,693.35 = 2,641,128.90 : x
  2. Step 2: Convert to fraction form
    2,641,128.90/3,961,693.35 = 2,641,128.90/x
  3. Step 3: Cross multiply
    2,641,128.90x = 3,961,693.35 × 2,641,128.90
  4. Step 4: Simplify right side
    2,641,128.90x = 10,463,342,799,622.81
  5. Step 5: Solve for x
    x = 10,463,342,799,622.81/2,641,128.90
  6. Step 6: Final answer
    x = 3,961,693.35

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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.