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Finding the Fourth Proportional to 555,025.44, 765,934.79 and 313,310.10

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Solution

The fourth proportional to 555,025.44, 765,934.79 and 313,310.10 is: 432,367.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,025.44 : 765,934.79 = 313,310.10 : x
  2. Step 2: Convert to fraction form
    555,025.44/765,934.79 = 313,310.10/x
  3. Step 3: Cross multiply
    555,025.44x = 765,934.79 × 313,310.10
  4. Step 4: Simplify right side
    555,025.44x = 239,975,105,648.38
  5. Step 5: Solve for x
    x = 239,975,105,648.38/555,025.44
  6. Step 6: Final answer
    x = 432,367.76

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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.