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Finding the Fourth Proportional to 663,499.44, 915,548.94 and 376,939.26

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Solution

The fourth proportional to 663,499.44, 915,548.94 and 376,939.26 is: 520,130.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,499.44 : 915,548.94 = 376,939.26 : x
  2. Step 2: Convert to fraction form
    663,499.44/915,548.94 = 376,939.26/x
  3. Step 3: Cross multiply
    663,499.44x = 915,548.94 × 376,939.26
  4. Step 4: Simplify right side
    663,499.44x = 345,106,339,937.38
  5. Step 5: Solve for x
    x = 345,106,339,937.38/663,499.44
  6. Step 6: Final answer
    x = 520,130.57

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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.