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Finding the Fourth Proportional to 663,093.50, 915,069.03 and 361,287.50

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Solution

The fourth proportional to 663,093.50, 915,069.03 and 361,287.50 is: 498,576.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,093.50 : 915,069.03 = 361,287.50 : x
  2. Step 2: Convert to fraction form
    663,093.50/915,069.03 = 361,287.50/x
  3. Step 3: Cross multiply
    663,093.50x = 915,069.03 × 361,287.50
  4. Step 4: Simplify right side
    663,093.50x = 330,603,002,176.13
  5. Step 5: Solve for x
    x = 330,603,002,176.13/663,093.50
  6. Step 6: Final answer
    x = 498,576.75

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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.