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Finding the Fourth Proportional to 681,178.08, 940,068.72 and 379,371.36

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Solution

The fourth proportional to 681,178.08, 940,068.72 and 379,371.36 is: 523,556.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,178.08 : 940,068.72 = 379,371.36 : x
  2. Step 2: Convert to fraction form
    681,178.08/940,068.72 = 379,371.36/x
  3. Step 3: Cross multiply
    681,178.08x = 940,068.72 × 379,371.36
  4. Step 4: Simplify right side
    681,178.08x = 356,635,148,799.86
  5. Step 5: Solve for x
    x = 356,635,148,799.86/681,178.08
  6. Step 6: Final answer
    x = 523,556.41

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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.