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Finding the Fourth Proportional to 275,478.60, 412,440.30 and 275,478.60

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Solution

The fourth proportional to 275,478.60, 412,440.30 and 275,478.60 is: 412,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,478.60 : 412,440.30 = 275,478.60 : x
  2. Step 2: Convert to fraction form
    275,478.60/412,440.30 = 275,478.60/x
  3. Step 3: Cross multiply
    275,478.60x = 412,440.30 × 275,478.60
  4. Step 4: Simplify right side
    275,478.60x = 113,618,476,427.58
  5. Step 5: Solve for x
    x = 113,618,476,427.58/275,478.60
  6. Step 6: Final answer
    x = 412,440.30

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1.5x scale

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.