Home / 863,628.78-1,191,809.79-481,680.17

Finding the Fourth Proportional to 863,628.78, 1,191,809.79 and 481,680.17

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Solution

The fourth proportional to 863,628.78, 1,191,809.79 and 481,680.17 is: 664,719.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,628.78 : 1,191,809.79 = 481,680.17 : x
  2. Step 2: Convert to fraction form
    863,628.78/1,191,809.79 = 481,680.17/x
  3. Step 3: Cross multiply
    863,628.78x = 1,191,809.79 × 481,680.17
  4. Step 4: Simplify right side
    863,628.78x = 574,071,133,887.41
  5. Step 5: Solve for x
    x = 574,071,133,887.41/863,628.78
  6. Step 6: Final answer
    x = 664,719.78

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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.