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Finding the Fourth Proportional to 483,986.46, 726,014.25 and 128,998.62

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Solution

The fourth proportional to 483,986.46, 726,014.25 and 128,998.62 is: 193,507.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,986.46 : 726,014.25 = 128,998.62 : x
  2. Step 2: Convert to fraction form
    483,986.46/726,014.25 = 128,998.62/x
  3. Step 3: Cross multiply
    483,986.46x = 726,014.25 × 128,998.62
  4. Step 4: Simplify right side
    483,986.46x = 93,654,836,350.34
  5. Step 5: Solve for x
    x = 93,654,836,350.34/483,986.46
  6. Step 6: Final answer
    x = 193,507.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.