Home / 1,212,986.70-1,819,480.05-1,189,367.10

Finding the Fourth Proportional to 1,212,986.70, 1,819,480.05 and 1,189,367.10

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Solution

The fourth proportional to 1,212,986.70, 1,819,480.05 and 1,189,367.10 is: 1,784,050.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,986.70 : 1,819,480.05 = 1,189,367.10 : x
  2. Step 2: Convert to fraction form
    1,212,986.70/1,819,480.05 = 1,189,367.10/x
  3. Step 3: Cross multiply
    1,212,986.70x = 1,819,480.05 × 1,189,367.10
  4. Step 4: Simplify right side
    1,212,986.70x = 2,164,029,710,576.36
  5. Step 5: Solve for x
    x = 2,164,029,710,576.36/1,212,986.70
  6. Step 6: Final answer
    x = 1,784,050.65

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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.