Home / 1,428,394.55-1,971,183.33-783,855.27

Finding the Fourth Proportional to 1,428,394.55, 1,971,183.33 and 783,855.27

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Solution

The fourth proportional to 1,428,394.55, 1,971,183.33 and 783,855.27 is: 1,081,719.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,394.55 : 1,971,183.33 = 783,855.27 : x
  2. Step 2: Convert to fraction form
    1,428,394.55/1,971,183.33 = 783,855.27/x
  3. Step 3: Cross multiply
    1,428,394.55x = 1,971,183.33 × 783,855.27
  4. Step 4: Simplify right side
    1,428,394.55x = 1,545,122,441,356.65
  5. Step 5: Solve for x
    x = 1,545,122,441,356.65/1,428,394.55
  6. Step 6: Final answer
    x = 1,081,719.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.