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Finding the Fourth Proportional to 554,568,398.64, 765,328,299.12 and 307,049,745.60

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Solution

The fourth proportional to 554,568,398.64, 765,328,299.12 and 307,049,745.60 is: 423,741,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,568,398.64 : 765,328,299.12 = 307,049,745.60 : x
  2. Step 2: Convert to fraction form
    554,568,398.64/765,328,299.12 = 307,049,745.60/x
  3. Step 3: Cross multiply
    554,568,398.64x = 765,328,299.12 × 307,049,745.60
  4. Step 4: Simplify right side
    554,568,398.64x = 234,993,859,545,276,736
  5. Step 5: Solve for x
    x = 234,993,859,545,276,736/554,568,398.64
  6. Step 6: Final answer
    x = 423,741,886.70

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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.