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Finding the Fourth Proportional to 489,501.51, 675,554.83 and 285,618.11

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Solution

The fourth proportional to 489,501.51, 675,554.83 and 285,618.11 is: 394,177.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,501.51 : 675,554.83 = 285,618.11 : x
  2. Step 2: Convert to fraction form
    489,501.51/675,554.83 = 285,618.11/x
  3. Step 3: Cross multiply
    489,501.51x = 675,554.83 × 285,618.11
  4. Step 4: Simplify right side
    489,501.51x = 192,950,692,317.88
  5. Step 5: Solve for x
    x = 192,950,692,317.88/489,501.51
  6. Step 6: Final answer
    x = 394,177.93

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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.