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Finding the Fourth Proportional to 664,148.97, 916,521.03 and 377,668.98

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Solution

The fourth proportional to 664,148.97, 916,521.03 and 377,668.98 is: 521,180.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,148.97 : 916,521.03 = 377,668.98 : x
  2. Step 2: Convert to fraction form
    664,148.97/916,521.03 = 377,668.98/x
  3. Step 3: Cross multiply
    664,148.97x = 916,521.03 × 377,668.98
  4. Step 4: Simplify right side
    664,148.97x = 346,141,562,548.65
  5. Step 5: Solve for x
    x = 346,141,562,548.65/664,148.97
  6. Step 6: Final answer
    x = 521,180.61

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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.