Home / 1,286,782.56-1,930,187.80-388,232.34

Finding the Fourth Proportional to 1,286,782.56, 1,930,187.80 and 388,232.34

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Solution

The fourth proportional to 1,286,782.56, 1,930,187.80 and 388,232.34 is: 582,352.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,782.56 : 1,930,187.80 = 388,232.34 : x
  2. Step 2: Convert to fraction form
    1,286,782.56/1,930,187.80 = 388,232.34/x
  3. Step 3: Cross multiply
    1,286,782.56x = 1,930,187.80 × 388,232.34
  4. Step 4: Simplify right side
    1,286,782.56x = 749,361,326,233.45
  5. Step 5: Solve for x
    x = 749,361,326,233.45/1,286,782.56
  6. Step 6: Final answer
    x = 582,352.72

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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.