Home / 639,520.20-882,514.72-353,034.12

Finding the Fourth Proportional to 639,520.20, 882,514.72 and 353,034.12

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Solution

The fourth proportional to 639,520.20, 882,514.72 and 353,034.12 is: 487,174.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,520.20 : 882,514.72 = 353,034.12 : x
  2. Step 2: Convert to fraction form
    639,520.20/882,514.72 = 353,034.12/x
  3. Step 3: Cross multiply
    639,520.20x = 882,514.72 × 353,034.12
  4. Step 4: Simplify right side
    639,520.20x = 311,557,807,562.25
  5. Step 5: Solve for x
    x = 311,557,807,562.25/639,520.20
  6. Step 6: Final answer
    x = 487,174.30

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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.