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Finding the Fourth Proportional to 492,395.10, 679,584.51 and 371,672.70

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Solution

The fourth proportional to 492,395.10, 679,584.51 and 371,672.70 is: 512,968.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,395.10 : 679,584.51 = 371,672.70 : x
  2. Step 2: Convert to fraction form
    492,395.10/679,584.51 = 371,672.70/x
  3. Step 3: Cross multiply
    492,395.10x = 679,584.51 × 371,672.70
  4. Step 4: Simplify right side
    492,395.10x = 252,583,009,709.88
  5. Step 5: Solve for x
    x = 252,583,009,709.88/492,395.10
  6. Step 6: Final answer
    x = 512,968.16

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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.