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Finding the Fourth Proportional to 667,730.56, 921,491.76 and 365,924.56

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Solution

The fourth proportional to 667,730.56, 921,491.76 and 365,924.56 is: 504,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,730.56 : 921,491.76 = 365,924.56 : x
  2. Step 2: Convert to fraction form
    667,730.56/921,491.76 = 365,924.56/x
  3. Step 3: Cross multiply
    667,730.56x = 921,491.76 × 365,924.56
  4. Step 4: Simplify right side
    667,730.56x = 337,196,466,821.63
  5. Step 5: Solve for x
    x = 337,196,466,821.63/667,730.56
  6. Step 6: Final answer
    x = 504,988.82

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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.