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Finding the Fourth Proportional to 642,903.73, 964,158.73 and 444,499.09

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Solution

The fourth proportional to 642,903.73, 964,158.73 and 444,499.09 is: 666,612.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,903.73 : 964,158.73 = 444,499.09 : x
  2. Step 2: Convert to fraction form
    642,903.73/964,158.73 = 444,499.09/x
  3. Step 3: Cross multiply
    642,903.73x = 964,158.73 × 444,499.09
  4. Step 4: Simplify right side
    642,903.73x = 428,567,678,100.56
  5. Step 5: Solve for x
    x = 428,567,678,100.56/642,903.73
  6. Step 6: Final answer
    x = 666,612.52

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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.