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Finding the Fourth Proportional to 536,635.70, 803,624.91 and 394,143.07

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Solution

The fourth proportional to 536,635.70, 803,624.91 and 394,143.07 is: 590,238.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,635.70 : 803,624.91 = 394,143.07 : x
  2. Step 2: Convert to fraction form
    536,635.70/803,624.91 = 394,143.07/x
  3. Step 3: Cross multiply
    536,635.70x = 803,624.91 × 394,143.07
  4. Step 4: Simplify right side
    536,635.70x = 316,743,189,155.87
  5. Step 5: Solve for x
    x = 316,743,189,155.87/536,635.70
  6. Step 6: Final answer
    x = 590,238.76

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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.