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Finding the Fourth Proportional to 543,690.36, 750,308.94 and 328,869.72

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Solution

The fourth proportional to 543,690.36, 750,308.94 and 328,869.72 is: 453,850.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,690.36 : 750,308.94 = 328,869.72 : x
  2. Step 2: Convert to fraction form
    543,690.36/750,308.94 = 328,869.72/x
  3. Step 3: Cross multiply
    543,690.36x = 750,308.94 × 328,869.72
  4. Step 4: Simplify right side
    543,690.36x = 246,753,891,011.30
  5. Step 5: Solve for x
    x = 246,753,891,011.30/543,690.36
  6. Step 6: Final answer
    x = 453,850.04

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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.