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Finding the Fourth Proportional to 449,502.98, 619,735.28 and 320,588.44

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Solution

The fourth proportional to 449,502.98, 619,735.28 and 320,588.44 is: 441,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,502.98 : 619,735.28 = 320,588.44 : x
  2. Step 2: Convert to fraction form
    449,502.98/619,735.28 = 320,588.44/x
  3. Step 3: Cross multiply
    449,502.98x = 619,735.28 × 320,588.44
  4. Step 4: Simplify right side
    449,502.98x = 198,679,966,628.16
  5. Step 5: Solve for x
    x = 198,679,966,628.16/449,502.98
  6. Step 6: Final answer
    x = 441,999.22

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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.