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Finding the Fourth Proportional to 550,991.70, 825,466.95 and 313,629.30

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Solution

The fourth proportional to 550,991.70, 825,466.95 and 313,629.30 is: 469,863.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,991.70 : 825,466.95 = 313,629.30 : x
  2. Step 2: Convert to fraction form
    550,991.70/825,466.95 = 313,629.30/x
  3. Step 3: Cross multiply
    550,991.70x = 825,466.95 × 313,629.30
  4. Step 4: Simplify right side
    550,991.70x = 258,890,621,701.64
  5. Step 5: Solve for x
    x = 258,890,621,701.64/550,991.70
  6. Step 6: Final answer
    x = 469,863.02

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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.