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Finding the Fourth Proportional to 483,110.72, 666,774.78 and 279,279.80

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Solution

The fourth proportional to 483,110.72, 666,774.78 and 279,279.80 is: 385,453.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,110.72 : 666,774.78 = 279,279.80 : x
  2. Step 2: Convert to fraction form
    483,110.72/666,774.78 = 279,279.80/x
  3. Step 3: Cross multiply
    483,110.72x = 666,774.78 × 279,279.80
  4. Step 4: Simplify right side
    483,110.72x = 186,216,727,203.44
  5. Step 5: Solve for x
    x = 186,216,727,203.44/483,110.72
  6. Step 6: Final answer
    x = 385,453.52

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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.