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Finding the Fourth Proportional to 675,170.73, 931,850.18 and 388,856.58

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Solution

The fourth proportional to 675,170.73, 931,850.18 and 388,856.58 is: 536,688.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,170.73 : 931,850.18 = 388,856.58 : x
  2. Step 2: Convert to fraction form
    675,170.73/931,850.18 = 388,856.58/x
  3. Step 3: Cross multiply
    675,170.73x = 931,850.18 × 388,856.58
  4. Step 4: Simplify right side
    675,170.73x = 362,356,074,067.18
  5. Step 5: Solve for x
    x = 362,356,074,067.18/675,170.73
  6. Step 6: Final answer
    x = 536,688.07

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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.