Home / 1,428,178.40-1,970,886.03-816,344.24

Finding the Fourth Proportional to 1,428,178.40, 1,970,886.03 and 816,344.24

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Solution

The fourth proportional to 1,428,178.40, 1,970,886.03 and 816,344.24 is: 1,126,554.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,178.40 : 1,970,886.03 = 816,344.24 : x
  2. Step 2: Convert to fraction form
    1,428,178.40/1,970,886.03 = 816,344.24/x
  3. Step 3: Cross multiply
    1,428,178.40x = 1,970,886.03 × 816,344.24
  4. Step 4: Simplify right side
    1,428,178.40x = 1,608,921,458,286.97
  5. Step 5: Solve for x
    x = 1,608,921,458,286.97/1,428,178.40
  6. Step 6: Final answer
    x = 1,126,554.96

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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.