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Finding the Fourth Proportional to 3,131,969.60, 4,375,309.60 and 3,131,969.60

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Solution

The fourth proportional to 3,131,969.60, 4,375,309.60 and 3,131,969.60 is: 4,375,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131,969.60 : 4,375,309.60 = 3,131,969.60 : x
  2. Step 2: Convert to fraction form
    3,131,969.60/4,375,309.60 = 3,131,969.60/x
  3. Step 3: Cross multiply
    3,131,969.60x = 4,375,309.60 × 3,131,969.60
  4. Step 4: Simplify right side
    3,131,969.60x = 13,703,336,657,788.16
  5. Step 5: Solve for x
    x = 13,703,336,657,788.16/3,131,969.60
  6. Step 6: Final answer
    x = 4,375,309.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.