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Finding the Fourth Proportional to 555,012.74, 765,917.42 and 300,363.86

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Solution

The fourth proportional to 555,012.74, 765,917.42 and 300,363.86 is: 414,502.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,012.74 : 765,917.42 = 300,363.86 : x
  2. Step 2: Convert to fraction form
    555,012.74/765,917.42 = 300,363.86/x
  3. Step 3: Cross multiply
    555,012.74x = 765,917.42 × 300,363.86
  4. Step 4: Simplify right side
    555,012.74x = 230,053,912,712.44
  5. Step 5: Solve for x
    x = 230,053,912,712.44/555,012.74
  6. Step 6: Final answer
    x = 414,502.04

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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.