Home / 639,585.92-882,629.88-353,106.56

Finding the Fourth Proportional to 639,585.92, 882,629.88 and 353,106.56

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Solution

The fourth proportional to 639,585.92, 882,629.88 and 353,106.56 is: 487,287.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,585.92 : 882,629.88 = 353,106.56 : x
  2. Step 2: Convert to fraction form
    639,585.92/882,629.88 = 353,106.56/x
  3. Step 3: Cross multiply
    639,585.92x = 882,629.88 × 353,106.56
  4. Step 4: Simplify right side
    639,585.92x = 311,662,400,680.01
  5. Step 5: Solve for x
    x = 311,662,400,680.01/639,585.92
  6. Step 6: Final answer
    x = 487,287.78

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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.