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Finding the Fourth Proportional to 681,748.84, 940,845.54 and 379,945

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Solution

The fourth proportional to 681,748.84, 940,845.54 and 379,945 is: 524,342.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,748.84 : 940,845.54 = 379,945 : x
  2. Step 2: Convert to fraction form
    681,748.84/940,845.54 = 379,945/x
  3. Step 3: Cross multiply
    681,748.84x = 940,845.54 × 379,945
  4. Step 4: Simplify right side
    681,748.84x = 357,469,558,695.30
  5. Step 5: Solve for x
    x = 357,469,558,695.30/681,748.84
  6. Step 6: Final answer
    x = 524,342.01

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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.