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Finding the Fourth Proportional to 479,328.17, 661,712.57 and 298,098.48

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Solution

The fourth proportional to 479,328.17, 661,712.57 and 298,098.48 is: 411,524.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,328.17 : 661,712.57 = 298,098.48 : x
  2. Step 2: Convert to fraction form
    479,328.17/661,712.57 = 298,098.48/x
  3. Step 3: Cross multiply
    479,328.17x = 661,712.57 × 298,098.48
  4. Step 4: Simplify right side
    479,328.17x = 197,255,511,313.89
  5. Step 5: Solve for x
    x = 197,255,511,313.89/479,328.17
  6. Step 6: Final answer
    x = 411,524.97

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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.