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Finding the Fourth Proportional to 554,773.36, 765,579.74 and 309,761.91

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Solution

The fourth proportional to 554,773.36, 765,579.74 and 309,761.91 is: 427,467.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,773.36 : 765,579.74 = 309,761.91 : x
  2. Step 2: Convert to fraction form
    554,773.36/765,579.74 = 309,761.91/x
  3. Step 3: Cross multiply
    554,773.36x = 765,579.74 × 309,761.91
  4. Step 4: Simplify right side
    554,773.36x = 237,147,442,519.70
  5. Step 5: Solve for x
    x = 237,147,442,519.70/554,773.36
  6. Step 6: Final answer
    x = 427,467.25

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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.