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Finding the Fourth Proportional to 489,382.08, 675,584.67 and 328,178.28

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Solution

The fourth proportional to 489,382.08, 675,584.67 and 328,178.28 is: 453,045.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,382.08 : 675,584.67 = 328,178.28 : x
  2. Step 2: Convert to fraction form
    489,382.08/675,584.67 = 328,178.28/x
  3. Step 3: Cross multiply
    489,382.08x = 675,584.67 × 328,178.28
  4. Step 4: Simplify right side
    489,382.08x = 221,712,214,994.97
  5. Step 5: Solve for x
    x = 221,712,214,994.97/489,382.08
  6. Step 6: Final answer
    x = 453,045.23

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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.