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Finding the Fourth Proportional to 451,638.09, 622,746.77 and 369,705.78

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Solution

The fourth proportional to 451,638.09, 622,746.77 and 369,705.78 is: 509,773.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,638.09 : 622,746.77 = 369,705.78 : x
  2. Step 2: Convert to fraction form
    451,638.09/622,746.77 = 369,705.78/x
  3. Step 3: Cross multiply
    451,638.09x = 622,746.77 × 369,705.78
  4. Step 4: Simplify right side
    451,638.09x = 230,233,078,496.80
  5. Step 5: Solve for x
    x = 230,233,078,496.80/451,638.09
  6. Step 6: Final answer
    x = 509,773.39

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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.