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Finding the Fourth Proportional to 681,159, 940,028.58 and 379,353

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Solution

The fourth proportional to 681,159, 940,028.58 and 379,353 is: 523,523.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,159 : 940,028.58 = 379,353 : x
  2. Step 2: Convert to fraction form
    681,159/940,028.58 = 379,353/x
  3. Step 3: Cross multiply
    681,159x = 940,028.58 × 379,353
  4. Step 4: Simplify right side
    681,159x = 356,602,661,908.74
  5. Step 5: Solve for x
    x = 356,602,661,908.74/681,159
  6. Step 6: Final answer
    x = 523,523.38

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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.