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Finding the Fourth Proportional to 489,484, 675,489.54 and 285,675.04

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Solution

The fourth proportional to 489,484, 675,489.54 and 285,675.04 is: 394,232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,484 : 675,489.54 = 285,675.04 : x
  2. Step 2: Convert to fraction form
    489,484/675,489.54 = 285,675.04/x
  3. Step 3: Cross multiply
    489,484x = 675,489.54 × 285,675.04
  4. Step 4: Simplify right side
    489,484x = 192,970,501,359.08
  5. Step 5: Solve for x
    x = 192,970,501,359.08/489,484
  6. Step 6: Final answer
    x = 394,232.50

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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.