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Finding the Fourth Proportional to 449,654.56, 620,812.56 and 288,579.04

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Solution

The fourth proportional to 449,654.56, 620,812.56 and 288,579.04 is: 398,424.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,654.56 : 620,812.56 = 288,579.04 : x
  2. Step 2: Convert to fraction form
    449,654.56/620,812.56 = 288,579.04/x
  3. Step 3: Cross multiply
    449,654.56x = 620,812.56 × 288,579.04
  4. Step 4: Simplify right side
    449,654.56x = 179,153,492,584.74
  5. Step 5: Solve for x
    x = 179,153,492,584.74/449,654.56
  6. Step 6: Final answer
    x = 398,424.72

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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.