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Finding the Fourth Proportional to 449,470.40, 674,205.60 and 405,233.60

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Solution

The fourth proportional to 449,470.40, 674,205.60 and 405,233.60 is: 607,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,470.40 : 674,205.60 = 405,233.60 : x
  2. Step 2: Convert to fraction form
    449,470.40/674,205.60 = 405,233.60/x
  3. Step 3: Cross multiply
    449,470.40x = 674,205.60 × 405,233.60
  4. Step 4: Simplify right side
    449,470.40x = 273,210,762,428.16
  5. Step 5: Solve for x
    x = 273,210,762,428.16/449,470.40
  6. Step 6: Final answer
    x = 607,850.40

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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.