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Finding the Fourth Proportional to 999,689.31, 1,499,379.89 and 325,768.89

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Solution

The fourth proportional to 999,689.31, 1,499,379.89 and 325,768.89 is: 488,603.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,689.31 : 1,499,379.89 = 325,768.89 : x
  2. Step 2: Convert to fraction form
    999,689.31/1,499,379.89 = 325,768.89/x
  3. Step 3: Cross multiply
    999,689.31x = 1,499,379.89 × 325,768.89
  4. Step 4: Simplify right side
    999,689.31x = 488,451,320,824.78
  5. Step 5: Solve for x
    x = 488,451,320,824.78/999,689.31
  6. Step 6: Final answer
    x = 488,603.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.