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Finding the Fourth Proportional to 492,072.60, 737,072.10 and 409,128.60

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Solution

The fourth proportional to 492,072.60, 737,072.10 and 409,128.60 is: 612,830.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,072.60 : 737,072.10 = 409,128.60 : x
  2. Step 2: Convert to fraction form
    492,072.60/737,072.10 = 409,128.60/x
  3. Step 3: Cross multiply
    492,072.60x = 737,072.10 × 409,128.60
  4. Step 4: Simplify right side
    492,072.60x = 301,557,276,372.06
  5. Step 5: Solve for x
    x = 301,557,276,372.06/492,072.60
  6. Step 6: Final answer
    x = 612,830.86

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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.