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Finding the Fourth Proportional to 663,309.26, 915,369.82 and 376,845.07

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Solution

The fourth proportional to 663,309.26, 915,369.82 and 376,845.07 is: 520,047.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,309.26 : 915,369.82 = 376,845.07 : x
  2. Step 2: Convert to fraction form
    663,309.26/915,369.82 = 376,845.07/x
  3. Step 3: Cross multiply
    663,309.26x = 915,369.82 × 376,845.07
  4. Step 4: Simplify right side
    663,309.26x = 344,952,600,663.25
  5. Step 5: Solve for x
    x = 344,952,600,663.25/663,309.26
  6. Step 6: Final answer
    x = 520,047.92

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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.