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Finding the Fourth Proportional to 492,389.95, 737,620.82 and 438,833.97

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Solution

The fourth proportional to 492,389.95, 737,620.82 and 438,833.97 is: 657,391.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,389.95 : 737,620.82 = 438,833.97 : x
  2. Step 2: Convert to fraction form
    492,389.95/737,620.82 = 438,833.97/x
  3. Step 3: Cross multiply
    492,389.95x = 737,620.82 × 438,833.97
  4. Step 4: Simplify right side
    492,389.95x = 323,693,069,107.15
  5. Step 5: Solve for x
    x = 323,693,069,107.15/492,389.95
  6. Step 6: Final answer
    x = 657,391.71

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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.