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Finding the Fourth Proportional to 576,976.82, 864,691.61 and 449,047.58

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Solution

The fourth proportional to 576,976.82, 864,691.61 and 449,047.58 is: 672,969.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,976.82 : 864,691.61 = 449,047.58 : x
  2. Step 2: Convert to fraction form
    576,976.82/864,691.61 = 449,047.58/x
  3. Step 3: Cross multiply
    576,976.82x = 864,691.61 × 449,047.58
  4. Step 4: Simplify right side
    576,976.82x = 388,287,674,916.80
  5. Step 5: Solve for x
    x = 388,287,674,916.80/576,976.82
  6. Step 6: Final answer
    x = 672,969.28

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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.