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Finding the Fourth Proportional to 555,930, 767,265.75 and 351,999.88

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Solution

The fourth proportional to 555,930, 767,265.75 and 351,999.88 is: 485,811.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,930 : 767,265.75 = 351,999.88 : x
  2. Step 2: Convert to fraction form
    555,930/767,265.75 = 351,999.88/x
  3. Step 3: Cross multiply
    555,930x = 767,265.75 × 351,999.88
  4. Step 4: Simplify right side
    555,930x = 270,077,450,009.95
  5. Step 5: Solve for x
    x = 270,077,450,009.95/555,930
  6. Step 6: Final answer
    x = 485,811.97

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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.