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Finding the Fourth Proportional to 665,561.40, 998,998.20 and 328,982.10

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Solution

The fourth proportional to 665,561.40, 998,998.20 and 328,982.10 is: 493,797.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,561.40 : 998,998.20 = 328,982.10 : x
  2. Step 2: Convert to fraction form
    665,561.40/998,998.20 = 328,982.10/x
  3. Step 3: Cross multiply
    665,561.40x = 998,998.20 × 328,982.10
  4. Step 4: Simplify right side
    665,561.40x = 328,652,525,732.22
  5. Step 5: Solve for x
    x = 328,652,525,732.22/665,561.40
  6. Step 6: Final answer
    x = 493,797.46

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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.