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Finding the Fourth Proportional to 699,037.39, 964,662.41 and 393,113.68

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Solution

The fourth proportional to 699,037.39, 964,662.41 and 393,113.68 is: 542,491.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,037.39 : 964,662.41 = 393,113.68 : x
  2. Step 2: Convert to fraction form
    699,037.39/964,662.41 = 393,113.68/x
  3. Step 3: Cross multiply
    699,037.39x = 964,662.41 × 393,113.68
  4. Step 4: Simplify right side
    699,037.39x = 379,221,991,237.01
  5. Step 5: Solve for x
    x = 379,221,991,237.01/699,037.39
  6. Step 6: Final answer
    x = 542,491.71

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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.