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Finding the Fourth Proportional to 987,687.72, 1,479,986.10 and 763,600.41

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Solution

The fourth proportional to 987,687.72, 1,479,986.10 and 763,600.41 is: 1,144,205.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,687.72 : 1,479,986.10 = 763,600.41 : x
  2. Step 2: Convert to fraction form
    987,687.72/1,479,986.10 = 763,600.41/x
  3. Step 3: Cross multiply
    987,687.72x = 1,479,986.10 × 763,600.41
  4. Step 4: Simplify right side
    987,687.72x = 1,130,117,992,754.30
  5. Step 5: Solve for x
    x = 1,130,117,992,754.30/987,687.72
  6. Step 6: Final answer
    x = 1,144,205.77

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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.