Home / 1,428,179.31-1,970,887.41-816,345.27

Finding the Fourth Proportional to 1,428,179.31, 1,970,887.41 and 816,345.27

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Solution

The fourth proportional to 1,428,179.31, 1,970,887.41 and 816,345.27 is: 1,126,556.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,179.31 : 1,970,887.41 = 816,345.27 : x
  2. Step 2: Convert to fraction form
    1,428,179.31/1,970,887.41 = 816,345.27/x
  3. Step 3: Cross multiply
    1,428,179.31x = 1,970,887.41 × 816,345.27
  4. Step 4: Simplify right side
    1,428,179.31x = 1,608,924,614,856.05
  5. Step 5: Solve for x
    x = 1,608,924,614,856.05/1,428,179.31
  6. Step 6: Final answer
    x = 1,126,556.45

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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.