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Finding the Fourth Proportional to 449,568.88, 671,073.76 and 392,817.30

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Solution

The fourth proportional to 449,568.88, 671,073.76 and 392,817.30 is: 586,360.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,568.88 : 671,073.76 = 392,817.30 : x
  2. Step 2: Convert to fraction form
    449,568.88/671,073.76 = 392,817.30/x
  3. Step 3: Cross multiply
    449,568.88x = 671,073.76 × 392,817.30
  4. Step 4: Simplify right side
    449,568.88x = 263,609,380,478.54
  5. Step 5: Solve for x
    x = 263,609,380,478.54/449,568.88
  6. Step 6: Final answer
    x = 586,360.38

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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.