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Finding the Fourth Proportional to 675,168.85, 931,847.59 and 388,854.71

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Solution

The fourth proportional to 675,168.85, 931,847.59 and 388,854.71 is: 536,685.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,168.85 : 931,847.59 = 388,854.71 : x
  2. Step 2: Convert to fraction form
    675,168.85/931,847.59 = 388,854.71/x
  3. Step 3: Cross multiply
    675,168.85x = 931,847.59 × 388,854.71
  4. Step 4: Simplify right side
    675,168.85x = 362,353,324,373.65
  5. Step 5: Solve for x
    x = 362,353,324,373.65/675,168.85
  6. Step 6: Final answer
    x = 536,685.49

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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.