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Finding the Fourth Proportional to 536,382.87, 739,880.01 and 318,443.61

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Solution

The fourth proportional to 536,382.87, 739,880.01 and 318,443.61 is: 439,257.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,382.87 : 739,880.01 = 318,443.61 : x
  2. Step 2: Convert to fraction form
    536,382.87/739,880.01 = 318,443.61/x
  3. Step 3: Cross multiply
    536,382.87x = 739,880.01 × 318,443.61
  4. Step 4: Simplify right side
    536,382.87x = 235,610,061,351.24
  5. Step 5: Solve for x
    x = 235,610,061,351.24/536,382.87
  6. Step 6: Final answer
    x = 439,257.24

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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.