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Finding the Fourth Proportional to 961,390.72, 1,448,576.20 and 796,578.40

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Solution

The fourth proportional to 961,390.72, 1,448,576.20 and 796,578.40 is: 1,200,245.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,390.72 : 1,448,576.20 = 796,578.40 : x
  2. Step 2: Convert to fraction form
    961,390.72/1,448,576.20 = 796,578.40/x
  3. Step 3: Cross multiply
    961,390.72x = 1,448,576.20 × 796,578.40
  4. Step 4: Simplify right side
    961,390.72x = 1,153,904,511,674.08
  5. Step 5: Solve for x
    x = 1,153,904,511,674.08/961,390.72
  6. Step 6: Final answer
    x = 1,200,245.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.