Home / 639,927.44-883,081.14-353,441.24

Finding the Fourth Proportional to 639,927.44, 883,081.14 and 353,441.24

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Solution

The fourth proportional to 639,927.44, 883,081.14 and 353,441.24 is: 487,738.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,927.44 : 883,081.14 = 353,441.24 : x
  2. Step 2: Convert to fraction form
    639,927.44/883,081.14 = 353,441.24/x
  3. Step 3: Cross multiply
    639,927.44x = 883,081.14 × 353,441.24
  4. Step 4: Simplify right side
    639,927.44x = 312,117,293,142.21
  5. Step 5: Solve for x
    x = 312,117,293,142.21/639,927.44
  6. Step 6: Final answer
    x = 487,738.57

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Half scale
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Double scale
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Similar ratio
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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.