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Finding the Fourth Proportional to 404,495.40, 606,743.10 and 379,563.60

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Solution

The fourth proportional to 404,495.40, 606,743.10 and 379,563.60 is: 569,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,495.40 : 606,743.10 = 379,563.60 : x
  2. Step 2: Convert to fraction form
    404,495.40/606,743.10 = 379,563.60/x
  3. Step 3: Cross multiply
    404,495.40x = 606,743.10 × 379,563.60
  4. Step 4: Simplify right side
    404,495.40x = 230,297,595,311.16
  5. Step 5: Solve for x
    x = 230,297,595,311.16/404,495.40
  6. Step 6: Final answer
    x = 569,345.40

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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.