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Finding the Fourth Proportional to 494,785, 682,804.62 and 268,430.50

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Solution

The fourth proportional to 494,785, 682,804.62 and 268,430.50 is: 370,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,785 : 682,804.62 = 268,430.50 : x
  2. Step 2: Convert to fraction form
    494,785/682,804.62 = 268,430.50/x
  3. Step 3: Cross multiply
    494,785x = 682,804.62 × 268,430.50
  4. Step 4: Simplify right side
    494,785x = 183,285,585,548.91
  5. Step 5: Solve for x
    x = 183,285,585,548.91/494,785
  6. Step 6: Final answer
    x = 370,434.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.