Home / 639,263.56-882,182.82-352,783.60

Finding the Fourth Proportional to 639,263.56, 882,182.82 and 352,783.60

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Solution

The fourth proportional to 639,263.56, 882,182.82 and 352,783.60 is: 486,840.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,263.56 : 882,182.82 = 352,783.60 : x
  2. Step 2: Convert to fraction form
    639,263.56/882,182.82 = 352,783.60/x
  3. Step 3: Cross multiply
    639,263.56x = 882,182.82 × 352,783.60
  4. Step 4: Simplify right side
    639,263.56x = 311,219,631,097.75
  5. Step 5: Solve for x
    x = 311,219,631,097.75/639,263.56
  6. Step 6: Final answer
    x = 486,840.88

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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.