Home / 728,154.41-1,004,857.79-405,884.97

Finding the Fourth Proportional to 728,154.41, 1,004,857.79 and 405,884.97

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Solution

The fourth proportional to 728,154.41, 1,004,857.79 and 405,884.97 is: 560,123.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,154.41 : 1,004,857.79 = 405,884.97 : x
  2. Step 2: Convert to fraction form
    728,154.41/1,004,857.79 = 405,884.97/x
  3. Step 3: Cross multiply
    728,154.41x = 1,004,857.79 × 405,884.97
  4. Step 4: Simplify right side
    728,154.41x = 407,856,671,918.99
  5. Step 5: Solve for x
    x = 407,856,671,918.99/728,154.41
  6. Step 6: Final answer
    x = 560,123.88

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1.5x scale

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.