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Finding the Fourth Proportional to 1,989,815.91, 2,984,723.86 and 493,907.91

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Solution

The fourth proportional to 1,989,815.91, 2,984,723.86 and 493,907.91 is: 740,861.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,815.91 : 2,984,723.86 = 493,907.91 : x
  2. Step 2: Convert to fraction form
    1,989,815.91/2,984,723.86 = 493,907.91/x
  3. Step 3: Cross multiply
    1,989,815.91x = 2,984,723.86 × 493,907.91
  4. Step 4: Simplify right side
    1,989,815.91x = 1,474,178,723,619.73
  5. Step 5: Solve for x
    x = 1,474,178,723,619.73/1,989,815.91
  6. Step 6: Final answer
    x = 740,861.86

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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.