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Finding the Fourth Proportional to 452,136.94, 678,002.20 and 325,245.38

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Solution

The fourth proportional to 452,136.94, 678,002.20 and 325,245.38 is: 487,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,136.94 : 678,002.20 = 325,245.38 : x
  2. Step 2: Convert to fraction form
    452,136.94/678,002.20 = 325,245.38/x
  3. Step 3: Cross multiply
    452,136.94x = 678,002.20 × 325,245.38
  4. Step 4: Simplify right side
    452,136.94x = 220,517,078,976.71
  5. Step 5: Solve for x
    x = 220,517,078,976.71/452,136.94
  6. Step 6: Final answer
    x = 487,721.88

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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.