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Finding the Fourth Proportional to 563,387.78, 777,481.26 and 308,733.50

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Solution

The fourth proportional to 563,387.78, 777,481.26 and 308,733.50 is: 426,055.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,387.78 : 777,481.26 = 308,733.50 : x
  2. Step 2: Convert to fraction form
    563,387.78/777,481.26 = 308,733.50/x
  3. Step 3: Cross multiply
    563,387.78x = 777,481.26 × 308,733.50
  4. Step 4: Simplify right side
    563,387.78x = 240,034,510,584.21
  5. Step 5: Solve for x
    x = 240,034,510,584.21/563,387.78
  6. Step 6: Final answer
    x = 426,055.59

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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.