Home / 639,383.74-882,286.70-352,885.36

Finding the Fourth Proportional to 639,383.74, 882,286.70 and 352,885.36

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Solution

The fourth proportional to 639,383.74, 882,286.70 and 352,885.36 is: 486,947.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,383.74 : 882,286.70 = 352,885.36 : x
  2. Step 2: Convert to fraction form
    639,383.74/882,286.70 = 352,885.36/x
  3. Step 3: Cross multiply
    639,383.74x = 882,286.70 × 352,885.36
  4. Step 4: Simplify right side
    639,383.74x = 311,346,058,429.21
  5. Step 5: Solve for x
    x = 311,346,058,429.21/639,383.74
  6. Step 6: Final answer
    x = 486,947.10

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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.