Home / 1,428,559.21-1,971,367.31-783,962.83

Finding the Fourth Proportional to 1,428,559.21, 1,971,367.31 and 783,962.83

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Solution

The fourth proportional to 1,428,559.21, 1,971,367.31 and 783,962.83 is: 1,081,844.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,559.21 : 1,971,367.31 = 783,962.83 : x
  2. Step 2: Convert to fraction form
    1,428,559.21/1,971,367.31 = 783,962.83/x
  3. Step 3: Cross multiply
    1,428,559.21x = 1,971,367.31 × 783,962.83
  4. Step 4: Simplify right side
    1,428,559.21x = 1,545,478,681,540.44
  5. Step 5: Solve for x
    x = 1,545,478,681,540.44/1,428,559.21
  6. Step 6: Final answer
    x = 1,081,844.33

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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.