Home / 1,386,986.20-2,078,243.70-786,160.60

Finding the Fourth Proportional to 1,386,986.20, 2,078,243.70 and 786,160.60

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Solution

The fourth proportional to 1,386,986.20, 2,078,243.70 and 786,160.60 is: 1,177,973.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,986.20 : 2,078,243.70 = 786,160.60 : x
  2. Step 2: Convert to fraction form
    1,386,986.20/2,078,243.70 = 786,160.60/x
  3. Step 3: Cross multiply
    1,386,986.20x = 2,078,243.70 × 786,160.60
  4. Step 4: Simplify right side
    1,386,986.20x = 1,633,833,314,138.22
  5. Step 5: Solve for x
    x = 1,633,833,314,138.22/1,386,986.20
  6. Step 6: Final answer
    x = 1,177,973.73

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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.