Home / 650,185.10-897,435.75-378,305.50

Finding the Fourth Proportional to 650,185.10, 897,435.75 and 378,305.50

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Solution

The fourth proportional to 650,185.10, 897,435.75 and 378,305.50 is: 522,166.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,185.10 : 897,435.75 = 378,305.50 : x
  2. Step 2: Convert to fraction form
    650,185.10/897,435.75 = 378,305.50/x
  3. Step 3: Cross multiply
    650,185.10x = 897,435.75 × 378,305.50
  4. Step 4: Simplify right side
    650,185.10x = 339,504,880,121.63
  5. Step 5: Solve for x
    x = 339,504,880,121.63/650,185.10
  6. Step 6: Final answer
    x = 522,166.50

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1.5x scale

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.