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Finding the Fourth Proportional to 681,339.12, 940,359.96 and 379,630.32

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Solution

The fourth proportional to 681,339.12, 940,359.96 and 379,630.32 is: 523,952.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,339.12 : 940,359.96 = 379,630.32 : x
  2. Step 2: Convert to fraction form
    681,339.12/940,359.96 = 379,630.32/x
  3. Step 3: Cross multiply
    681,339.12x = 940,359.96 × 379,630.32
  4. Step 4: Simplify right side
    681,339.12x = 356,989,152,529.99
  5. Step 5: Solve for x
    x = 356,989,152,529.99/681,339.12
  6. Step 6: Final answer
    x = 523,952.23

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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.