Home / 745,493.40-1,028,792.62-405,961.38

Finding the Fourth Proportional to 745,493.40, 1,028,792.62 and 405,961.38

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Solution

The fourth proportional to 745,493.40, 1,028,792.62 and 405,961.38 is: 560,233.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,493.40 : 1,028,792.62 = 405,961.38 : x
  2. Step 2: Convert to fraction form
    745,493.40/1,028,792.62 = 405,961.38/x
  3. Step 3: Cross multiply
    745,493.40x = 1,028,792.62 × 405,961.38
  4. Step 4: Simplify right side
    745,493.40x = 417,650,071,749.02
  5. Step 5: Solve for x
    x = 417,650,071,749.02/745,493.40
  6. Step 6: Final answer
    x = 560,233.09

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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.