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Finding the Fourth Proportional to 496,430.79, 685,052.88 and 275,654.33

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Solution

The fourth proportional to 496,430.79, 685,052.88 and 275,654.33 is: 380,390.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,430.79 : 685,052.88 = 275,654.33 : x
  2. Step 2: Convert to fraction form
    496,430.79/685,052.88 = 275,654.33/x
  3. Step 3: Cross multiply
    496,430.79x = 685,052.88 × 275,654.33
  4. Step 4: Simplify right side
    496,430.79x = 188,837,792,650.97
  5. Step 5: Solve for x
    x = 188,837,792,650.97/496,430.79
  6. Step 6: Final answer
    x = 380,390.98

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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.