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Finding the Fourth Proportional to 663,103.92, 915,085.44 and 376,626.36

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Solution

The fourth proportional to 663,103.92, 915,085.44 and 376,626.36 is: 519,745.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,103.92 : 915,085.44 = 376,626.36 : x
  2. Step 2: Convert to fraction form
    663,103.92/915,085.44 = 376,626.36/x
  3. Step 3: Cross multiply
    663,103.92x = 915,085.44 × 376,626.36
  4. Step 4: Simplify right side
    663,103.92x = 344,645,298,356.20
  5. Step 5: Solve for x
    x = 344,645,298,356.20/663,103.92
  6. Step 6: Final answer
    x = 519,745.53

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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.