Home / 1,386,389.70-2,079,584.55-1,331,277.30

Finding the Fourth Proportional to 1,386,389.70, 2,079,584.55 and 1,331,277.30

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Solution

The fourth proportional to 1,386,389.70, 2,079,584.55 and 1,331,277.30 is: 1,996,915.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,389.70 : 2,079,584.55 = 1,331,277.30 : x
  2. Step 2: Convert to fraction form
    1,386,389.70/2,079,584.55 = 1,331,277.30/x
  3. Step 3: Cross multiply
    1,386,389.70x = 2,079,584.55 × 1,331,277.30
  4. Step 4: Simplify right side
    1,386,389.70x = 2,768,503,704,845.72
  5. Step 5: Solve for x
    x = 2,768,503,704,845.72/1,386,389.70
  6. Step 6: Final answer
    x = 1,996,915.95

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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.