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Finding the Fourth Proportional to 664,265.57, 916,760.25 and 373,885.97

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Solution

The fourth proportional to 664,265.57, 916,760.25 and 373,885.97 is: 516,004.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,265.57 : 916,760.25 = 373,885.97 : x
  2. Step 2: Convert to fraction form
    664,265.57/916,760.25 = 373,885.97/x
  3. Step 3: Cross multiply
    664,265.57x = 916,760.25 × 373,885.97
  4. Step 4: Simplify right side
    664,265.57x = 342,763,790,744.89
  5. Step 5: Solve for x
    x = 342,763,790,744.89/664,265.57
  6. Step 6: Final answer
    x = 516,004.15

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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.