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Finding the Fourth Proportional to 478,466.26, 660,379.06 and 274,654.96

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Solution

The fourth proportional to 478,466.26, 660,379.06 and 274,654.96 is: 379,078.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,466.26 : 660,379.06 = 274,654.96 : x
  2. Step 2: Convert to fraction form
    478,466.26/660,379.06 = 274,654.96/x
  3. Step 3: Cross multiply
    478,466.26x = 660,379.06 × 274,654.96
  4. Step 4: Simplify right side
    478,466.26x = 181,376,384,309.14
  5. Step 5: Solve for x
    x = 181,376,384,309.14/478,466.26
  6. Step 6: Final answer
    x = 379,078.73

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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.