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Finding the Fourth Proportional to 503,855.28, 695,369.40 and 376,309.44

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Solution

The fourth proportional to 503,855.28, 695,369.40 and 376,309.44 is: 519,343.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,855.28 : 695,369.40 = 376,309.44 : x
  2. Step 2: Convert to fraction form
    503,855.28/695,369.40 = 376,309.44/x
  3. Step 3: Cross multiply
    503,855.28x = 695,369.40 × 376,309.44
  4. Step 4: Simplify right side
    503,855.28x = 261,674,069,507.14
  5. Step 5: Solve for x
    x = 261,674,069,507.14/503,855.28
  6. Step 6: Final answer
    x = 519,343.71

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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.