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Finding the Fourth Proportional to 531,495.41, 733,453.79 and 289,780.07

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Solution

The fourth proportional to 531,495.41, 733,453.79 and 289,780.07 is: 399,891.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,495.41 : 733,453.79 = 289,780.07 : x
  2. Step 2: Convert to fraction form
    531,495.41/733,453.79 = 289,780.07/x
  3. Step 3: Cross multiply
    531,495.41x = 733,453.79 × 289,780.07
  4. Step 4: Simplify right side
    531,495.41x = 212,540,285,491.80
  5. Step 5: Solve for x
    x = 212,540,285,491.80/531,495.41
  6. Step 6: Final answer
    x = 399,891.11

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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.