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Finding the Fourth Proportional to 492,076.79, 679,072.81 and 274,279.44

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Solution

The fourth proportional to 492,076.79, 679,072.81 and 274,279.44 is: 378,509.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,076.79 : 679,072.81 = 274,279.44 : x
  2. Step 2: Convert to fraction form
    492,076.79/679,072.81 = 274,279.44/x
  3. Step 3: Cross multiply
    492,076.79x = 679,072.81 × 274,279.44
  4. Step 4: Simplify right side
    492,076.79x = 186,255,713,334.86
  5. Step 5: Solve for x
    x = 186,255,713,334.86/492,076.79
  6. Step 6: Final answer
    x = 378,509.44

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1.5x scale

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.