Home / 638,912.60-881,982.78-412,668.44

Finding the Fourth Proportional to 638,912.60, 881,982.78 and 412,668.44

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Solution

The fourth proportional to 638,912.60, 881,982.78 and 412,668.44 is: 569,665.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,912.60 : 881,982.78 = 412,668.44 : x
  2. Step 2: Convert to fraction form
    638,912.60/881,982.78 = 412,668.44/x
  3. Step 3: Cross multiply
    638,912.60x = 881,982.78 × 412,668.44
  4. Step 4: Simplify right side
    638,912.60x = 363,966,457,929.46
  5. Step 5: Solve for x
    x = 363,966,457,929.46/638,912.60
  6. Step 6: Final answer
    x = 569,665.49

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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.