Home / 728,025.82-1,004,676.42-405,728.62

Finding the Fourth Proportional to 728,025.82, 1,004,676.42 and 405,728.62

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Solution

The fourth proportional to 728,025.82, 1,004,676.42 and 405,728.62 is: 559,905.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,025.82 : 1,004,676.42 = 405,728.62 : x
  2. Step 2: Convert to fraction form
    728,025.82/1,004,676.42 = 405,728.62/x
  3. Step 3: Cross multiply
    728,025.82x = 1,004,676.42 × 405,728.62
  4. Step 4: Simplify right side
    728,025.82x = 407,625,977,433.14
  5. Step 5: Solve for x
    x = 407,625,977,433.14/728,025.82
  6. Step 6: Final answer
    x = 559,905.93

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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.