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Finding the Fourth Proportional to 663,382.75, 915,492.69 and 376,951.36

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Solution

The fourth proportional to 663,382.75, 915,492.69 and 376,951.36 is: 520,206.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,382.75 : 915,492.69 = 376,951.36 : x
  2. Step 2: Convert to fraction form
    663,382.75/915,492.69 = 376,951.36/x
  3. Step 3: Cross multiply
    663,382.75x = 915,492.69 × 376,951.36
  4. Step 4: Simplify right side
    663,382.75x = 345,096,208,103.34
  5. Step 5: Solve for x
    x = 345,096,208,103.34/663,382.75
  6. Step 6: Final answer
    x = 520,206.79

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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.