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Finding the Fourth Proportional to 576,764.78, 795,930.72 and 318,641.54

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Solution

The fourth proportional to 576,764.78, 795,930.72 and 318,641.54 is: 439,722.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,764.78 : 795,930.72 = 318,641.54 : x
  2. Step 2: Convert to fraction form
    576,764.78/795,930.72 = 318,641.54/x
  3. Step 3: Cross multiply
    576,764.78x = 795,930.72 × 318,641.54
  4. Step 4: Simplify right side
    576,764.78x = 253,616,590,354.11
  5. Step 5: Solve for x
    x = 253,616,590,354.11/576,764.78
  6. Step 6: Final answer
    x = 439,722.74

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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.