Home / 745,179.92-1,028,354.64-405,647.36

Finding the Fourth Proportional to 745,179.92, 1,028,354.64 and 405,647.36

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Solution

The fourth proportional to 745,179.92, 1,028,354.64 and 405,647.36 is: 559,796.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,179.92 : 1,028,354.64 = 405,647.36 : x
  2. Step 2: Convert to fraction form
    745,179.92/1,028,354.64 = 405,647.36/x
  3. Step 3: Cross multiply
    745,179.92x = 1,028,354.64 × 405,647.36
  4. Step 4: Simplify right side
    745,179.92x = 417,149,344,859.75
  5. Step 5: Solve for x
    x = 417,149,344,859.75/745,179.92
  6. Step 6: Final answer
    x = 559,796.81

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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.