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Finding the Fourth Proportional to 441,521.90, 661,602.45 and 328,672.70

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Solution

The fourth proportional to 441,521.90, 661,602.45 and 328,672.70 is: 492,502.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,521.90 : 661,602.45 = 328,672.70 : x
  2. Step 2: Convert to fraction form
    441,521.90/661,602.45 = 328,672.70/x
  3. Step 3: Cross multiply
    441,521.90x = 661,602.45 × 328,672.70
  4. Step 4: Simplify right side
    441,521.90x = 217,450,663,568.12
  5. Step 5: Solve for x
    x = 217,450,663,568.12/441,521.90
  6. Step 6: Final answer
    x = 492,502.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.