Home / 1,286,778.56-1,930,181.81-388,228.34

Finding the Fourth Proportional to 1,286,778.56, 1,930,181.81 and 388,228.34

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Solution

The fourth proportional to 1,286,778.56, 1,930,181.81 and 388,228.34 is: 582,346.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,778.56 : 1,930,181.81 = 388,228.34 : x
  2. Step 2: Convert to fraction form
    1,286,778.56/1,930,181.81 = 388,228.34/x
  3. Step 3: Cross multiply
    1,286,778.56x = 1,930,181.81 × 388,228.34
  4. Step 4: Simplify right side
    1,286,778.56x = 749,351,282,878.81
  5. Step 5: Solve for x
    x = 749,351,282,878.81/1,286,778.56
  6. Step 6: Final answer
    x = 582,346.73

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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.