Home / 570,105.97-786,621.31-340,628.78

Finding the Fourth Proportional to 570,105.97, 786,621.31 and 340,628.78

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Solution

The fourth proportional to 570,105.97, 786,621.31 and 340,628.78 is: 469,993.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,105.97 : 786,621.31 = 340,628.78 : x
  2. Step 2: Convert to fraction form
    570,105.97/786,621.31 = 340,628.78/x
  3. Step 3: Cross multiply
    570,105.97x = 786,621.31 × 340,628.78
  4. Step 4: Simplify right side
    570,105.97x = 267,945,858,262.28
  5. Step 5: Solve for x
    x = 267,945,858,262.28/570,105.97
  6. Step 6: Final answer
    x = 469,993.08

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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.