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Finding the Fourth Proportional to 519,963.95, 717,484.31 and 305,025.59

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Solution

The fourth proportional to 519,963.95, 717,484.31 and 305,025.59 is: 420,896.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,963.95 : 717,484.31 = 305,025.59 : x
  2. Step 2: Convert to fraction form
    519,963.95/717,484.31 = 305,025.59/x
  3. Step 3: Cross multiply
    519,963.95x = 717,484.31 × 305,025.59
  4. Step 4: Simplify right side
    519,963.95x = 218,851,076,083.77
  5. Step 5: Solve for x
    x = 218,851,076,083.77/519,963.95
  6. Step 6: Final answer
    x = 420,896.63

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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.