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Finding the Fourth Proportional to 489,501.41, 675,554.68 and 285,618.01

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Solution

The fourth proportional to 489,501.41, 675,554.68 and 285,618.01 is: 394,177.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,501.41 : 675,554.68 = 285,618.01 : x
  2. Step 2: Convert to fraction form
    489,501.41/675,554.68 = 285,618.01/x
  3. Step 3: Cross multiply
    489,501.41x = 675,554.68 × 285,618.01
  4. Step 4: Simplify right side
    489,501.41x = 192,950,583,818.12
  5. Step 5: Solve for x
    x = 192,950,583,818.12/489,501.41
  6. Step 6: Final answer
    x = 394,177.79

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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.