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Finding the Fourth Proportional to 576,429.28, 795,485.82 and 361,578.40

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Solution

The fourth proportional to 576,429.28, 795,485.82 and 361,578.40 is: 498,986.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,429.28 : 795,485.82 = 361,578.40 : x
  2. Step 2: Convert to fraction form
    576,429.28/795,485.82 = 361,578.40/x
  3. Step 3: Cross multiply
    576,429.28x = 795,485.82 × 361,578.40
  4. Step 4: Simplify right side
    576,429.28x = 287,630,490,018.29
  5. Step 5: Solve for x
    x = 287,630,490,018.29/576,429.28
  6. Step 6: Final answer
    x = 498,986.61

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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.