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Finding the Fourth Proportional to 461,679.89, 637,128.97 and 289,605.10

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Solution

The fourth proportional to 461,679.89, 637,128.97 and 289,605.10 is: 399,661.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,679.89 : 637,128.97 = 289,605.10 : x
  2. Step 2: Convert to fraction form
    461,679.89/637,128.97 = 289,605.10/x
  3. Step 3: Cross multiply
    461,679.89x = 637,128.97 × 289,605.10
  4. Step 4: Simplify right side
    461,679.89x = 184,515,801,205.57
  5. Step 5: Solve for x
    x = 184,515,801,205.57/461,679.89
  6. Step 6: Final answer
    x = 399,661.77

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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.