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Finding the Fourth Proportional to 664,231.48, 916,659.66 and 377,792.80

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Solution

The fourth proportional to 664,231.48, 916,659.66 and 377,792.80 is: 521,365.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,231.48 : 916,659.66 = 377,792.80 : x
  2. Step 2: Convert to fraction form
    664,231.48/916,659.66 = 377,792.80/x
  3. Step 3: Cross multiply
    664,231.48x = 916,659.66 × 377,792.80
  4. Step 4: Simplify right side
    664,231.48x = 346,307,419,598.45
  5. Step 5: Solve for x
    x = 346,307,419,598.45/664,231.48
  6. Step 6: Final answer
    x = 521,365.56

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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.