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Finding the Fourth Proportional to 628,706.76, 943,060.44 and 207,982.63

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Solution

The fourth proportional to 628,706.76, 943,060.44 and 207,982.63 is: 311,974.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,706.76 : 943,060.44 = 207,982.63 : x
  2. Step 2: Convert to fraction form
    628,706.76/943,060.44 = 207,982.63/x
  3. Step 3: Cross multiply
    628,706.76x = 943,060.44 × 207,982.63
  4. Step 4: Simplify right side
    628,706.76x = 196,140,190,560.16
  5. Step 5: Solve for x
    x = 196,140,190,560.16/628,706.76
  6. Step 6: Final answer
    x = 311,974.04

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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.