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Finding the Fourth Proportional to 539,877.04, 810,306.96 and 287,369.56

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Solution

The fourth proportional to 539,877.04, 810,306.96 and 287,369.56 is: 431,315.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,877.04 : 810,306.96 = 287,369.56 : x
  2. Step 2: Convert to fraction form
    539,877.04/810,306.96 = 287,369.56/x
  3. Step 3: Cross multiply
    539,877.04x = 810,306.96 × 287,369.56
  4. Step 4: Simplify right side
    539,877.04x = 232,857,554,560.14
  5. Step 5: Solve for x
    x = 232,857,554,560.14/539,877.04
  6. Step 6: Final answer
    x = 431,315.91

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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.