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Finding the Fourth Proportional to 479,435.40, 661,419 and 336,288.96

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Solution

The fourth proportional to 479,435.40, 661,419 and 336,288.96 is: 463,937.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,435.40 : 661,419 = 336,288.96 : x
  2. Step 2: Convert to fraction form
    479,435.40/661,419 = 336,288.96/x
  3. Step 3: Cross multiply
    479,435.40x = 661,419 × 336,288.96
  4. Step 4: Simplify right side
    479,435.40x = 222,427,907,634.24
  5. Step 5: Solve for x
    x = 222,427,907,634.24/479,435.40
  6. Step 6: Final answer
    x = 463,937.18

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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.