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Finding the Fourth Proportional to 586,315.52, 809,115.68 and 331,661.28

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Solution

The fourth proportional to 586,315.52, 809,115.68 and 331,661.28 is: 457,692.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,315.52 : 809,115.68 = 331,661.28 : x
  2. Step 2: Convert to fraction form
    586,315.52/809,115.68 = 331,661.28/x
  3. Step 3: Cross multiply
    586,315.52x = 809,115.68 × 331,661.28
  4. Step 4: Simplify right side
    586,315.52x = 268,352,342,096.87
  5. Step 5: Solve for x
    x = 268,352,342,096.87/586,315.52
  6. Step 6: Final answer
    x = 457,692.71

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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.