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Finding the Fourth Proportional to 518,379.80, 777,453.07 and 185,955.80

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Solution

The fourth proportional to 518,379.80, 777,453.07 and 185,955.80 is: 278,891.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,379.80 : 777,453.07 = 185,955.80 : x
  2. Step 2: Convert to fraction form
    518,379.80/777,453.07 = 185,955.80/x
  3. Step 3: Cross multiply
    518,379.80x = 777,453.07 × 185,955.80
  4. Step 4: Simplify right side
    518,379.80x = 144,571,909,073.05
  5. Step 5: Solve for x
    x = 144,571,909,073.05/518,379.80
  6. Step 6: Final answer
    x = 278,891.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.