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Finding the Fourth Proportional to 492,820.20, 739,230.30 and 443,053.80

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Solution

The fourth proportional to 492,820.20, 739,230.30 and 443,053.80 is: 664,580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,820.20 : 739,230.30 = 443,053.80 : x
  2. Step 2: Convert to fraction form
    492,820.20/739,230.30 = 443,053.80/x
  3. Step 3: Cross multiply
    492,820.20x = 739,230.30 × 443,053.80
  4. Step 4: Simplify right side
    492,820.20x = 327,518,793,490.14
  5. Step 5: Solve for x
    x = 327,518,793,490.14/492,820.20
  6. Step 6: Final answer
    x = 664,580.70

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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.