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Finding the Fourth Proportional to 554,771.36, 765,576.98 and 309,759.90

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Solution

The fourth proportional to 554,771.36, 765,576.98 and 309,759.90 is: 427,464.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,771.36 : 765,576.98 = 309,759.90 : x
  2. Step 2: Convert to fraction form
    554,771.36/765,576.98 = 309,759.90/x
  3. Step 3: Cross multiply
    554,771.36x = 765,576.98 × 309,759.90
  4. Step 4: Simplify right side
    554,771.36x = 237,145,048,767.10
  5. Step 5: Solve for x
    x = 237,145,048,767.10/554,771.36
  6. Step 6: Final answer
    x = 427,464.48

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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.