Home / 499,469.55-689,135.09-284,605.04

Finding the Fourth Proportional to 499,469.55, 689,135.09 and 284,605.04

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Solution

The fourth proportional to 499,469.55, 689,135.09 and 284,605.04 is: 392,679.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,469.55 : 689,135.09 = 284,605.04 : x
  2. Step 2: Convert to fraction form
    499,469.55/689,135.09 = 284,605.04/x
  3. Step 3: Cross multiply
    499,469.55x = 689,135.09 × 284,605.04
  4. Step 4: Simplify right side
    499,469.55x = 196,131,314,986.15
  5. Step 5: Solve for x
    x = 196,131,314,986.15/499,469.55
  6. Step 6: Final answer
    x = 392,679.22

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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.