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Finding the Fourth Proportional to 579,807.97, 800,141.61 and 321,689.68

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Solution

The fourth proportional to 579,807.97, 800,141.61 and 321,689.68 is: 443,935.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,807.97 : 800,141.61 = 321,689.68 : x
  2. Step 2: Convert to fraction form
    579,807.97/800,141.61 = 321,689.68/x
  3. Step 3: Cross multiply
    579,807.97x = 800,141.61 × 321,689.68
  4. Step 4: Simplify right side
    579,807.97x = 257,397,298,475.59
  5. Step 5: Solve for x
    x = 257,397,298,475.59/579,807.97
  6. Step 6: Final answer
    x = 443,935.43

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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.