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Finding the Fourth Proportional to 492,706.40, 739,059.60 and 488,040.80

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Solution

The fourth proportional to 492,706.40, 739,059.60 and 488,040.80 is: 732,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,706.40 : 739,059.60 = 488,040.80 : x
  2. Step 2: Convert to fraction form
    492,706.40/739,059.60 = 488,040.80/x
  3. Step 3: Cross multiply
    492,706.40x = 739,059.60 × 488,040.80
  4. Step 4: Simplify right side
    492,706.40x = 360,691,238,431.68
  5. Step 5: Solve for x
    x = 360,691,238,431.68/492,706.40
  6. Step 6: Final answer
    x = 732,061.20

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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.