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Finding the Fourth Proportional to 536,636.33, 803,625.84 and 394,143.69

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Solution

The fourth proportional to 536,636.33, 803,625.84 and 394,143.69 is: 590,239.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,636.33 : 803,625.84 = 394,143.69 : x
  2. Step 2: Convert to fraction form
    536,636.33/803,625.84 = 394,143.69/x
  3. Step 3: Cross multiply
    536,636.33x = 803,625.84 × 394,143.69
  4. Step 4: Simplify right side
    536,636.33x = 316,744,053,956.95
  5. Step 5: Solve for x
    x = 316,744,053,956.95/536,636.33
  6. Step 6: Final answer
    x = 590,239.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.