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Finding the Fourth Proportional to 450,579.09, 675,122.25 and 316,805.77

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Solution

The fourth proportional to 450,579.09, 675,122.25 and 316,805.77 is: 474,683.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,579.09 : 675,122.25 = 316,805.77 : x
  2. Step 2: Convert to fraction form
    450,579.09/675,122.25 = 316,805.77/x
  3. Step 3: Cross multiply
    450,579.09x = 675,122.25 × 316,805.77
  4. Step 4: Simplify right side
    450,579.09x = 213,882,620,879.77
  5. Step 5: Solve for x
    x = 213,882,620,879.77/450,579.09
  6. Step 6: Final answer
    x = 474,683.86

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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.