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Finding the Fourth Proportional to 638,133.44, 956,620.82 and 318,383.10

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Solution

The fourth proportional to 638,133.44, 956,620.82 and 318,383.10 is: 477,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,133.44 : 956,620.82 = 318,383.10 : x
  2. Step 2: Convert to fraction form
    638,133.44/956,620.82 = 318,383.10/x
  3. Step 3: Cross multiply
    638,133.44x = 956,620.82 × 318,383.10
  4. Step 4: Simplify right side
    638,133.44x = 304,571,902,196.14
  5. Step 5: Solve for x
    x = 304,571,902,196.14/638,133.44
  6. Step 6: Final answer
    x = 477,285.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.