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Finding the Fourth Proportional to 494,858.70, 668,584.13 and 494,858.70

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Solution

The fourth proportional to 494,858.70, 668,584.13 and 494,858.70 is: 668,584.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,858.70 : 668,584.13 = 494,858.70 : x
  2. Step 2: Convert to fraction form
    494,858.70/668,584.13 = 494,858.70/x
  3. Step 3: Cross multiply
    494,858.70x = 668,584.13 × 494,858.70
  4. Step 4: Simplify right side
    494,858.70x = 330,854,670,938.14
  5. Step 5: Solve for x
    x = 330,854,670,938.14/494,858.70
  6. Step 6: Final answer
    x = 668,584.13

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.