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Finding the Fourth Proportional to 675,168.73, 931,847.42 and 388,854.58

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Solution

The fourth proportional to 675,168.73, 931,847.42 and 388,854.58 is: 536,685.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,168.73 : 931,847.42 = 388,854.58 : x
  2. Step 2: Convert to fraction form
    675,168.73/931,847.42 = 388,854.58/x
  3. Step 3: Cross multiply
    675,168.73x = 931,847.42 × 388,854.58
  4. Step 4: Simplify right side
    675,168.73x = 362,353,137,128.18
  5. Step 5: Solve for x
    x = 362,353,137,128.18/675,168.73
  6. Step 6: Final answer
    x = 536,685.31

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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.