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Finding the Fourth Proportional to 659,321.70, 988,982.55 and 659,321.70

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Solution

The fourth proportional to 659,321.70, 988,982.55 and 659,321.70 is: 988,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,321.70 : 988,982.55 = 659,321.70 : x
  2. Step 2: Convert to fraction form
    659,321.70/988,982.55 = 659,321.70/x
  3. Step 3: Cross multiply
    659,321.70x = 988,982.55 × 659,321.70
  4. Step 4: Simplify right side
    659,321.70x = 652,057,656,136.34
  5. Step 5: Solve for x
    x = 652,057,656,136.34/659,321.70
  6. Step 6: Final answer
    x = 988,982.55

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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.