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Finding the Fourth Proportional to 555,053.67, 765,974.06 and 300,404.86

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Solution

The fourth proportional to 555,053.67, 765,974.06 and 300,404.86 is: 414,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,053.67 : 765,974.06 = 300,404.86 : x
  2. Step 2: Convert to fraction form
    555,053.67/765,974.06 = 300,404.86/x
  3. Step 3: Cross multiply
    555,053.67x = 765,974.06 × 300,404.86
  4. Step 4: Simplify right side
    555,053.67x = 230,102,330,257.93
  5. Step 5: Solve for x
    x = 230,102,330,257.93/555,053.67
  6. Step 6: Final answer
    x = 414,558.70

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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.