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Finding the Fourth Proportional to 663,382.25, 915,491.99 and 376,950.86

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Solution

The fourth proportional to 663,382.25, 915,491.99 and 376,950.86 is: 520,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,382.25 : 915,491.99 = 376,950.86 : x
  2. Step 2: Convert to fraction form
    663,382.25/915,491.99 = 376,950.86/x
  3. Step 3: Cross multiply
    663,382.25x = 915,491.99 × 376,950.86
  4. Step 4: Simplify right side
    663,382.25x = 345,095,489,318.53
  5. Step 5: Solve for x
    x = 345,095,489,318.53/663,382.25
  6. Step 6: Final answer
    x = 520,206.10

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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.