Home / 764,488.78-1,054,972.15-420,324.37

Finding the Fourth Proportional to 764,488.78, 1,054,972.15 and 420,324.37

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Solution

The fourth proportional to 764,488.78, 1,054,972.15 and 420,324.37 is: 580,035.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,488.78 : 1,054,972.15 = 420,324.37 : x
  2. Step 2: Convert to fraction form
    764,488.78/1,054,972.15 = 420,324.37/x
  3. Step 3: Cross multiply
    764,488.78x = 1,054,972.15 × 420,324.37
  4. Step 4: Simplify right side
    764,488.78x = 443,430,500,628.05
  5. Step 5: Solve for x
    x = 443,430,500,628.05/764,488.78
  6. Step 6: Final answer
    x = 580,035.33

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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.