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Finding the Fourth Proportional to 576,930.05, 796,159.11 and 318,824.40

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Solution

The fourth proportional to 576,930.05, 796,159.11 and 318,824.40 is: 439,975.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,930.05 : 796,159.11 = 318,824.40 : x
  2. Step 2: Convert to fraction form
    576,930.05/796,159.11 = 318,824.40/x
  3. Step 3: Cross multiply
    576,930.05x = 796,159.11 × 318,824.40
  4. Step 4: Simplify right side
    576,930.05x = 253,834,950,550.28
  5. Step 5: Solve for x
    x = 253,834,950,550.28/576,930.05
  6. Step 6: Final answer
    x = 439,975.26

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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.