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Finding the Fourth Proportional to 492,399.84, 679,503.60 and 277,540.32

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Solution

The fourth proportional to 492,399.84, 679,503.60 and 277,540.32 is: 383,001.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,399.84 : 679,503.60 = 277,540.32 : x
  2. Step 2: Convert to fraction form
    492,399.84/679,503.60 = 277,540.32/x
  3. Step 3: Cross multiply
    492,399.84x = 679,503.60 × 277,540.32
  4. Step 4: Simplify right side
    492,399.84x = 188,589,646,585.15
  5. Step 5: Solve for x
    x = 188,589,646,585.15/492,399.84
  6. Step 6: Final answer
    x = 383,001.03

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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.