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Finding the Fourth Proportional to 639,287.44, 882,228.97 and 352,801.37

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Solution

The fourth proportional to 639,287.44, 882,228.97 and 352,801.37 is: 486,872.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,287.44 : 882,228.97 = 352,801.37 : x
  2. Step 2: Convert to fraction form
    639,287.44/882,228.97 = 352,801.37/x
  3. Step 3: Cross multiply
    639,287.44x = 882,228.97 × 352,801.37
  4. Step 4: Simplify right side
    639,287.44x = 311,251,589,931.76
  5. Step 5: Solve for x
    x = 311,251,589,931.76/639,287.44
  6. Step 6: Final answer
    x = 486,872.68

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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.