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Finding the Fourth Proportional to 490,896.48, 676,665.19 and 449,709.81

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Solution

The fourth proportional to 490,896.48, 676,665.19 and 449,709.81 is: 619,892.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,896.48 : 676,665.19 = 449,709.81 : x
  2. Step 2: Convert to fraction form
    490,896.48/676,665.19 = 449,709.81/x
  3. Step 3: Cross multiply
    490,896.48x = 676,665.19 × 449,709.81
  4. Step 4: Simplify right side
    490,896.48x = 304,302,972,053.16
  5. Step 5: Solve for x
    x = 304,302,972,053.16/490,896.48
  6. Step 6: Final answer
    x = 619,892.34

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1.5x scale

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.