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Finding the Fourth Proportional to 666,384.41, 919,631.60 and 364,578.41

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Solution

The fourth proportional to 666,384.41, 919,631.60 and 364,578.41 is: 503,129.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,384.41 : 919,631.60 = 364,578.41 : x
  2. Step 2: Convert to fraction form
    666,384.41/919,631.60 = 364,578.41/x
  3. Step 3: Cross multiply
    666,384.41x = 919,631.60 × 364,578.41
  4. Step 4: Simplify right side
    666,384.41x = 335,277,820,092.71
  5. Step 5: Solve for x
    x = 335,277,820,092.71/666,384.41
  6. Step 6: Final answer
    x = 503,129.75

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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.