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Finding the Fourth Proportional to 642,963.48, 964,248.31 and 444,558.84

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Solution

The fourth proportional to 642,963.48, 964,248.31 and 444,558.84 is: 666,702.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,963.48 : 964,248.31 = 444,558.84 : x
  2. Step 2: Convert to fraction form
    642,963.48/964,248.31 = 444,558.84/x
  3. Step 3: Cross multiply
    642,963.48x = 964,248.31 × 444,558.84
  4. Step 4: Simplify right side
    642,963.48x = 428,665,110,165.56
  5. Step 5: Solve for x
    x = 428,665,110,165.56/642,963.48
  6. Step 6: Final answer
    x = 666,702.11

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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.