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Finding the Fourth Proportional to 675,168.98, 931,847.76 and 388,854.83

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Solution

The fourth proportional to 675,168.98, 931,847.76 and 388,854.83 is: 536,685.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,168.98 : 931,847.76 = 388,854.83 : x
  2. Step 2: Convert to fraction form
    675,168.98/931,847.76 = 388,854.83/x
  3. Step 3: Cross multiply
    675,168.98x = 931,847.76 × 388,854.83
  4. Step 4: Simplify right side
    675,168.98x = 362,353,504,630.30
  5. Step 5: Solve for x
    x = 362,353,504,630.30/675,168.98
  6. Step 6: Final answer
    x = 536,685.66

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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.