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Finding the Fourth Proportional to 545,666.28, 814,231.89 and 488,928.42

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Solution

The fourth proportional to 545,666.28, 814,231.89 and 488,928.42 is: 729,568.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,666.28 : 814,231.89 = 488,928.42 : x
  2. Step 2: Convert to fraction form
    545,666.28/814,231.89 = 488,928.42/x
  3. Step 3: Cross multiply
    545,666.28x = 814,231.89 × 488,928.42
  4. Step 4: Simplify right side
    545,666.28x = 398,101,111,491.31
  5. Step 5: Solve for x
    x = 398,101,111,491.31/545,666.28
  6. Step 6: Final answer
    x = 729,568.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.