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Finding the Fourth Proportional to 738,614.88, 1,019,289 and 399,083.04

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Solution

The fourth proportional to 738,614.88, 1,019,289 and 399,083.04 is: 550,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,614.88 : 1,019,289 = 399,083.04 : x
  2. Step 2: Convert to fraction form
    738,614.88/1,019,289 = 399,083.04/x
  3. Step 3: Cross multiply
    738,614.88x = 1,019,289 × 399,083.04
  4. Step 4: Simplify right side
    738,614.88x = 406,780,952,758.56
  5. Step 5: Solve for x
    x = 406,780,952,758.56/738,614.88
  6. Step 6: Final answer
    x = 550,734.85

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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.