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Finding the Fourth Proportional to 408,072.60, 571,768.20 and 408,072.60

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Solution

The fourth proportional to 408,072.60, 571,768.20 and 408,072.60 is: 571,768.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,072.60 : 571,768.20 = 408,072.60 : x
  2. Step 2: Convert to fraction form
    408,072.60/571,768.20 = 408,072.60/x
  3. Step 3: Cross multiply
    408,072.60x = 571,768.20 × 408,072.60
  4. Step 4: Simplify right side
    408,072.60x = 233,322,935,971.32
  5. Step 5: Solve for x
    x = 233,322,935,971.32/408,072.60
  6. Step 6: Final answer
    x = 571,768.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.