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Finding the Fourth Proportional to 663,096, 915,072.48 and 361,290

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Solution

The fourth proportional to 663,096, 915,072.48 and 361,290 is: 498,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,096 : 915,072.48 = 361,290 : x
  2. Step 2: Convert to fraction form
    663,096/915,072.48 = 361,290/x
  3. Step 3: Cross multiply
    663,096x = 915,072.48 × 361,290
  4. Step 4: Simplify right side
    663,096x = 330,606,536,299.20
  5. Step 5: Solve for x
    x = 330,606,536,299.20/663,096
  6. Step 6: Final answer
    x = 498,580.20

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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.