Home / 639,676.81-882,383.93-413,322.31

Finding the Fourth Proportional to 639,676.81, 882,383.93 and 413,322.31

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Solution

The fourth proportional to 639,676.81, 882,383.93 and 413,322.31 is: 570,145.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,676.81 : 882,383.93 = 413,322.31 : x
  2. Step 2: Convert to fraction form
    639,676.81/882,383.93 = 413,322.31/x
  3. Step 3: Cross multiply
    639,676.81x = 882,383.93 × 413,322.31
  4. Step 4: Simplify right side
    639,676.81x = 364,708,957,775.95
  5. Step 5: Solve for x
    x = 364,708,957,775.95/639,676.81
  6. Step 6: Final answer
    x = 570,145.67

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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.