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Finding the Fourth Proportional to 442,772.73, 660,705.66 and 395,059.95

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Solution

The fourth proportional to 442,772.73, 660,705.66 and 395,059.95 is: 589,508.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,772.73 : 660,705.66 = 395,059.95 : x
  2. Step 2: Convert to fraction form
    442,772.73/660,705.66 = 395,059.95/x
  3. Step 3: Cross multiply
    442,772.73x = 660,705.66 × 395,059.95
  4. Step 4: Simplify right side
    442,772.73x = 261,018,345,004.32
  5. Step 5: Solve for x
    x = 261,018,345,004.32/442,772.73
  6. Step 6: Final answer
    x = 589,508.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.