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Finding the Fourth Proportional to 675,169.98, 931,849.14 and 388,855.83

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Solution

The fourth proportional to 675,169.98, 931,849.14 and 388,855.83 is: 536,687.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,169.98 : 931,849.14 = 388,855.83 : x
  2. Step 2: Convert to fraction form
    675,169.98/931,849.14 = 388,855.83/x
  3. Step 3: Cross multiply
    675,169.98x = 931,849.14 × 388,855.83
  4. Step 4: Simplify right side
    675,169.98x = 362,354,970,769.49
  5. Step 5: Solve for x
    x = 362,354,970,769.49/675,169.98
  6. Step 6: Final answer
    x = 536,687.03

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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.