Home / 639,272.56-882,195.24-352,792.60

Finding the Fourth Proportional to 639,272.56, 882,195.24 and 352,792.60

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Solution

The fourth proportional to 639,272.56, 882,195.24 and 352,792.60 is: 486,853.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,272.56 : 882,195.24 = 352,792.60 : x
  2. Step 2: Convert to fraction form
    639,272.56/882,195.24 = 352,792.60/x
  3. Step 3: Cross multiply
    639,272.56x = 882,195.24 × 352,792.60
  4. Step 4: Simplify right side
    639,272.56x = 311,231,952,427.22
  5. Step 5: Solve for x
    x = 311,231,952,427.22/639,272.56
  6. Step 6: Final answer
    x = 486,853.30

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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.