Home / 639,408.14-882,383.31-352,928.30

Finding the Fourth Proportional to 639,408.14, 882,383.31 and 352,928.30

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Solution

The fourth proportional to 639,408.14, 882,383.31 and 352,928.30 is: 487,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,408.14 : 882,383.31 = 352,928.30 : x
  2. Step 2: Convert to fraction form
    639,408.14/882,383.31 = 352,928.30/x
  3. Step 3: Cross multiply
    639,408.14x = 882,383.31 × 352,928.30
  4. Step 4: Simplify right side
    639,408.14x = 311,418,041,546.67
  5. Step 5: Solve for x
    x = 311,418,041,546.67/639,408.14
  6. Step 6: Final answer
    x = 487,041.10

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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.