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Finding the Fourth Proportional to 450,705.40, 622,394.96 and 289,839.84

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Solution

The fourth proportional to 450,705.40, 622,394.96 and 289,839.84 is: 400,250.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,705.40 : 622,394.96 = 289,839.84 : x
  2. Step 2: Convert to fraction form
    450,705.40/622,394.96 = 289,839.84/x
  3. Step 3: Cross multiply
    450,705.40x = 622,394.96 × 289,839.84
  4. Step 4: Simplify right side
    450,705.40x = 180,394,855,623.21
  5. Step 5: Solve for x
    x = 180,394,855,623.21/450,705.40
  6. Step 6: Final answer
    x = 400,250.04

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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.