Home / 1,128,965.52-1,557,771.43-638,932.73

Finding the Fourth Proportional to 1,128,965.52, 1,557,771.43 and 638,932.73

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Solution

The fourth proportional to 1,128,965.52, 1,557,771.43 and 638,932.73 is: 881,613.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,965.52 : 1,557,771.43 = 638,932.73 : x
  2. Step 2: Convert to fraction form
    1,128,965.52/1,557,771.43 = 638,932.73/x
  3. Step 3: Cross multiply
    1,128,965.52x = 1,557,771.43 × 638,932.73
  4. Step 4: Simplify right side
    1,128,965.52x = 995,311,149,291.24
  5. Step 5: Solve for x
    x = 995,311,149,291.24/1,128,965.52
  6. Step 6: Final answer
    x = 881,613.42

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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.