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Finding the Fourth Proportional to 815,698.20, 1,125,843.56 and 453,246.64

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Solution

The fourth proportional to 815,698.20, 1,125,843.56 and 453,246.64 is: 625,580.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,698.20 : 1,125,843.56 = 453,246.64 : x
  2. Step 2: Convert to fraction form
    815,698.20/1,125,843.56 = 453,246.64/x
  3. Step 3: Cross multiply
    815,698.20x = 1,125,843.56 × 453,246.64
  4. Step 4: Simplify right side
    815,698.20x = 510,284,810,735.64
  5. Step 5: Solve for x
    x = 510,284,810,735.64/815,698.20
  6. Step 6: Final answer
    x = 625,580.41

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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.