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Finding the Fourth Proportional to 457,652.67, 631,812.03 and 312,676.44

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Solution

The fourth proportional to 457,652.67, 631,812.03 and 312,676.44 is: 431,665.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,652.67 : 631,812.03 = 312,676.44 : x
  2. Step 2: Convert to fraction form
    457,652.67/631,812.03 = 312,676.44/x
  3. Step 3: Cross multiply
    457,652.67x = 631,812.03 × 312,676.44
  4. Step 4: Simplify right side
    457,652.67x = 197,552,736,289.57
  5. Step 5: Solve for x
    x = 197,552,736,289.57/457,652.67
  6. Step 6: Final answer
    x = 431,665.21

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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.