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Finding the Fourth Proportional to 667,059.70, 920,535.76 and 361,127.98

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Solution

The fourth proportional to 667,059.70, 920,535.76 and 361,127.98 is: 498,353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,059.70 : 920,535.76 = 361,127.98 : x
  2. Step 2: Convert to fraction form
    667,059.70/920,535.76 = 361,127.98/x
  3. Step 3: Cross multiply
    667,059.70x = 920,535.76 × 361,127.98
  4. Step 4: Simplify right side
    667,059.70x = 332,431,219,526.57
  5. Step 5: Solve for x
    x = 332,431,219,526.57/667,059.70
  6. Step 6: Final answer
    x = 498,353.03

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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.