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Finding the Fourth Proportional to 518,805.29, 715,944.89 and 292,450.79

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Solution

The fourth proportional to 518,805.29, 715,944.89 and 292,450.79 is: 403,578.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,805.29 : 715,944.89 = 292,450.79 : x
  2. Step 2: Convert to fraction form
    518,805.29/715,944.89 = 292,450.79/x
  3. Step 3: Cross multiply
    518,805.29x = 715,944.89 × 292,450.79
  4. Step 4: Simplify right side
    518,805.29x = 209,378,647,214.71
  5. Step 5: Solve for x
    x = 209,378,647,214.71/518,805.29
  6. Step 6: Final answer
    x = 403,578.47

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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.