Home / 812,009.48-1,120,556.34-449,411.71

Finding the Fourth Proportional to 812,009.48, 1,120,556.34 and 449,411.71

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Solution

The fourth proportional to 812,009.48, 1,120,556.34 and 449,411.71 is: 620,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,009.48 : 1,120,556.34 = 449,411.71 : x
  2. Step 2: Convert to fraction form
    812,009.48/1,120,556.34 = 449,411.71/x
  3. Step 3: Cross multiply
    812,009.48x = 1,120,556.34 × 449,411.71
  4. Step 4: Simplify right side
    812,009.48x = 503,591,138,663.68
  5. Step 5: Solve for x
    x = 503,591,138,663.68/812,009.48
  6. Step 6: Final answer
    x = 620,178.89

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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.