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Finding the Fourth Proportional to 457,092, 685,639.62 and 124,668

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Solution

The fourth proportional to 457,092, 685,639.62 and 124,668 is: 187,002.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,092 : 685,639.62 = 124,668 : x
  2. Step 2: Convert to fraction form
    457,092/685,639.62 = 124,668/x
  3. Step 3: Cross multiply
    457,092x = 685,639.62 × 124,668
  4. Step 4: Simplify right side
    457,092x = 85,477,320,146.16
  5. Step 5: Solve for x
    x = 85,477,320,146.16/457,092
  6. Step 6: Final answer
    x = 187,002.44

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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.