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Finding the Fourth Proportional to 487,533.26, 672,761.22 and 447,379.94

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Solution

The fourth proportional to 487,533.26, 672,761.22 and 447,379.94 is: 617,352.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,533.26 : 672,761.22 = 447,379.94 : x
  2. Step 2: Convert to fraction form
    487,533.26/672,761.22 = 447,379.94/x
  3. Step 3: Cross multiply
    487,533.26x = 672,761.22 × 447,379.94
  4. Step 4: Simplify right side
    487,533.26x = 300,979,874,237.93
  5. Step 5: Solve for x
    x = 300,979,874,237.93/487,533.26
  6. Step 6: Final answer
    x = 617,352.49

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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.