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Finding the Fourth Proportional to 449,578.63, 671,088.20 and 392,826.97

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Solution

The fourth proportional to 449,578.63, 671,088.20 and 392,826.97 is: 586,374.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,578.63 : 671,088.20 = 392,826.97 : x
  2. Step 2: Convert to fraction form
    449,578.63/671,088.20 = 392,826.97/x
  3. Step 3: Cross multiply
    449,578.63x = 671,088.20 × 392,826.97
  4. Step 4: Simplify right side
    449,578.63x = 263,621,544,208.75
  5. Step 5: Solve for x
    x = 263,621,544,208.75/449,578.63
  6. Step 6: Final answer
    x = 586,374.72

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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.