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Finding the Fourth Proportional to 489,461.64, 675,694.38 and 328,257.72

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Solution

The fourth proportional to 489,461.64, 675,694.38 and 328,257.72 is: 453,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,461.64 : 675,694.38 = 328,257.72 : x
  2. Step 2: Convert to fraction form
    489,461.64/675,694.38 = 328,257.72/x
  3. Step 3: Cross multiply
    489,461.64x = 675,694.38 × 328,257.72
  4. Step 4: Simplify right side
    489,461.64x = 221,801,896,595.61
  5. Step 5: Solve for x
    x = 221,801,896,595.61/489,461.64
  6. Step 6: Final answer
    x = 453,154.81

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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.