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Finding the Fourth Proportional to 489,501.87, 675,555.33 and 285,618.48

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Solution

The fourth proportional to 489,501.87, 675,555.33 and 285,618.48 is: 394,178.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,501.87 : 675,555.33 = 285,618.48 : x
  2. Step 2: Convert to fraction form
    489,501.87/675,555.33 = 285,618.48/x
  3. Step 3: Cross multiply
    489,501.87x = 675,555.33 × 285,618.48
  4. Step 4: Simplify right side
    489,501.87x = 192,951,083,977.17
  5. Step 5: Solve for x
    x = 192,951,083,977.17/489,501.87
  6. Step 6: Final answer
    x = 394,178.44

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1.5x scale

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.