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Finding the Fourth Proportional to 662,581.80, 993,872.70 and 628,367.40

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Solution

The fourth proportional to 662,581.80, 993,872.70 and 628,367.40 is: 942,551.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,581.80 : 993,872.70 = 628,367.40 : x
  2. Step 2: Convert to fraction form
    662,581.80/993,872.70 = 628,367.40/x
  3. Step 3: Cross multiply
    662,581.80x = 993,872.70 × 628,367.40
  4. Step 4: Simplify right side
    662,581.80x = 624,517,204,429.98
  5. Step 5: Solve for x
    x = 624,517,204,429.98/662,581.80
  6. Step 6: Final answer
    x = 942,551.10

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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.