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Finding the Fourth Proportional to 554,773.32, 765,579.72 and 309,761.88

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Solution

The fourth proportional to 554,773.32, 765,579.72 and 309,761.88 is: 427,467.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,773.32 : 765,579.72 = 309,761.88 : x
  2. Step 2: Convert to fraction form
    554,773.32/765,579.72 = 309,761.88/x
  3. Step 3: Cross multiply
    554,773.32x = 765,579.72 × 309,761.88
  4. Step 4: Simplify right side
    554,773.32x = 237,147,413,357.07
  5. Step 5: Solve for x
    x = 237,147,413,357.07/554,773.32
  6. Step 6: Final answer
    x = 427,467.23

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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.