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Finding the Fourth Proportional to 484,442.70, 667,838.09 and 340,756.80

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Solution

The fourth proportional to 484,442.70, 667,838.09 and 340,756.80 is: 469,757.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,442.70 : 667,838.09 = 340,756.80 : x
  2. Step 2: Convert to fraction form
    484,442.70/667,838.09 = 340,756.80/x
  3. Step 3: Cross multiply
    484,442.70x = 667,838.09 × 340,756.80
  4. Step 4: Simplify right side
    484,442.70x = 227,570,368,762.73
  5. Step 5: Solve for x
    x = 227,570,368,762.73/484,442.70
  6. Step 6: Final answer
    x = 469,757.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.