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Finding the Fourth Proportional to 382,428.76, 527,896.02 and 328,497.88

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Solution

The fourth proportional to 382,428.76, 527,896.02 and 328,497.88 is: 453,451.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,428.76 : 527,896.02 = 328,497.88 : x
  2. Step 2: Convert to fraction form
    382,428.76/527,896.02 = 328,497.88/x
  3. Step 3: Cross multiply
    382,428.76x = 527,896.02 × 328,497.88
  4. Step 4: Simplify right side
    382,428.76x = 173,412,723,430.44
  5. Step 5: Solve for x
    x = 173,412,723,430.44/382,428.76
  6. Step 6: Final answer
    x = 453,451.05

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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.