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Finding the Fourth Proportional to 486,954.40, 730,431.60 and 449,629.60

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Solution

The fourth proportional to 486,954.40, 730,431.60 and 449,629.60 is: 674,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,954.40 : 730,431.60 = 449,629.60 : x
  2. Step 2: Convert to fraction form
    486,954.40/730,431.60 = 449,629.60/x
  3. Step 3: Cross multiply
    486,954.40x = 730,431.60 × 449,629.60
  4. Step 4: Simplify right side
    486,954.40x = 328,423,668,135.36
  5. Step 5: Solve for x
    x = 328,423,668,135.36/486,954.40
  6. Step 6: Final answer
    x = 674,444.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.