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Finding the Fourth Proportional to 489,380.58, 675,582.60 and 328,176.78

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Solution

The fourth proportional to 489,380.58, 675,582.60 and 328,176.78 is: 453,043.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,380.58 : 675,582.60 = 328,176.78 : x
  2. Step 2: Convert to fraction form
    489,380.58/675,582.60 = 328,176.78/x
  3. Step 3: Cross multiply
    489,380.58x = 675,582.60 × 328,176.78
  4. Step 4: Simplify right side
    489,380.58x = 221,710,522,292.03
  5. Step 5: Solve for x
    x = 221,710,522,292.03/489,380.58
  6. Step 6: Final answer
    x = 453,043.16

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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.