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Finding the Fourth Proportional to 555,093.05, 766,078.92 and 313,435.04

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Solution

The fourth proportional to 555,093.05, 766,078.92 and 313,435.04 is: 432,568.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,093.05 : 766,078.92 = 313,435.04 : x
  2. Step 2: Convert to fraction form
    555,093.05/766,078.92 = 313,435.04/x
  3. Step 3: Cross multiply
    555,093.05x = 766,078.92 × 313,435.04
  4. Step 4: Simplify right side
    555,093.05x = 240,115,973,102.96
  5. Step 5: Solve for x
    x = 240,115,973,102.96/555,093.05
  6. Step 6: Final answer
    x = 432,568.87

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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.