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Finding the Fourth Proportional to 490,508.56, 676,898.37 and 275,644.01

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Solution

The fourth proportional to 490,508.56, 676,898.37 and 275,644.01 is: 380,386.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,508.56 : 676,898.37 = 275,644.01 : x
  2. Step 2: Convert to fraction form
    490,508.56/676,898.37 = 275,644.01/x
  3. Step 3: Cross multiply
    490,508.56x = 676,898.37 × 275,644.01
  4. Step 4: Simplify right side
    490,508.56x = 186,582,982,761.51
  5. Step 5: Solve for x
    x = 186,582,982,761.51/490,508.56
  6. Step 6: Final answer
    x = 380,386.80

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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.