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Finding the Fourth Proportional to 492,276.88, 679,568.88 and 288,299.44

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Solution

The fourth proportional to 492,276.88, 679,568.88 and 288,299.44 is: 397,986.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,276.88 : 679,568.88 = 288,299.44 : x
  2. Step 2: Convert to fraction form
    492,276.88/679,568.88 = 288,299.44/x
  3. Step 3: Cross multiply
    492,276.88x = 679,568.88 × 288,299.44
  4. Step 4: Simplify right side
    492,276.88x = 195,919,327,545.43
  5. Step 5: Solve for x
    x = 195,919,327,545.43/492,276.88
  6. Step 6: Final answer
    x = 397,986.04

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1.5x scale

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.