Home / 639,645.02-882,723.90-353,183.24

Finding the Fourth Proportional to 639,645.02, 882,723.90 and 353,183.24

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Solution

The fourth proportional to 639,645.02, 882,723.90 and 353,183.24 is: 487,400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,645.02 : 882,723.90 = 353,183.24 : x
  2. Step 2: Convert to fraction form
    639,645.02/882,723.90 = 353,183.24/x
  3. Step 3: Cross multiply
    639,645.02x = 882,723.90 × 353,183.24
  4. Step 4: Simplify right side
    639,645.02x = 311,763,287,027.44
  5. Step 5: Solve for x
    x = 311,763,287,027.44/639,645.02
  6. Step 6: Final answer
    x = 487,400.48

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Double scale
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1.5x scale

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.