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Finding the Fourth Proportional to 666,194.64, 919,325.52 and 379,806.96

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Solution

The fourth proportional to 666,194.64, 919,325.52 and 379,806.96 is: 524,120.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,194.64 : 919,325.52 = 379,806.96 : x
  2. Step 2: Convert to fraction form
    666,194.64/919,325.52 = 379,806.96/x
  3. Step 3: Cross multiply
    666,194.64x = 919,325.52 × 379,806.96
  4. Step 4: Simplify right side
    666,194.64x = 349,166,231,001.62
  5. Step 5: Solve for x
    x = 349,166,231,001.62/666,194.64
  6. Step 6: Final answer
    x = 524,120.44

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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.