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Finding the Fourth Proportional to 666,384.53, 919,631.76 and 364,578.53

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Solution

The fourth proportional to 666,384.53, 919,631.76 and 364,578.53 is: 503,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,384.53 : 919,631.76 = 364,578.53 : x
  2. Step 2: Convert to fraction form
    666,384.53/919,631.76 = 364,578.53/x
  3. Step 3: Cross multiply
    666,384.53x = 919,631.76 × 364,578.53
  4. Step 4: Simplify right side
    666,384.53x = 335,277,995,202.11
  5. Step 5: Solve for x
    x = 335,277,995,202.11/666,384.53
  6. Step 6: Final answer
    x = 503,129.92

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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.