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Finding the Fourth Proportional to 492,782.30, 739,173.45 and 442,918.70

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Solution

The fourth proportional to 492,782.30, 739,173.45 and 442,918.70 is: 664,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,782.30 : 739,173.45 = 442,918.70 : x
  2. Step 2: Convert to fraction form
    492,782.30/739,173.45 = 442,918.70/x
  3. Step 3: Cross multiply
    492,782.30x = 739,173.45 × 442,918.70
  4. Step 4: Simplify right side
    492,782.30x = 327,393,743,548.52
  5. Step 5: Solve for x
    x = 327,393,743,548.52/492,782.30
  6. Step 6: Final answer
    x = 664,378.05

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Similar ratio
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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.