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Finding the Fourth Proportional to 638,808.90, 956,219.94 and 470,519.25

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Solution

The fourth proportional to 638,808.90, 956,219.94 and 470,519.25 is: 704,310.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,808.90 : 956,219.94 = 470,519.25 : x
  2. Step 2: Convert to fraction form
    638,808.90/956,219.94 = 470,519.25/x
  3. Step 3: Cross multiply
    638,808.90x = 956,219.94 × 470,519.25
  4. Step 4: Simplify right side
    638,808.90x = 449,919,889,003.85
  5. Step 5: Solve for x
    x = 449,919,889,003.85/638,808.90
  6. Step 6: Final answer
    x = 704,310.61

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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.