Home / 12,638,505,067.16-18,959,009,439.54-4,672,761,899.72

Finding the Fourth Proportional to 12,638,505,067.16, 18,959,009,439.54 and 4,672,761,899.72

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Solution

The fourth proportional to 12,638,505,067.16, 18,959,009,439.54 and 4,672,761,899.72 is: 7,009,605,684.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638,505,067.16 : 18,959,009,439.54 = 4,672,761,899.72 : x
  2. Step 2: Convert to fraction form
    12,638,505,067.16/18,959,009,439.54 = 4,672,761,899.72/x
  3. Step 3: Cross multiply
    12,638,505,067.16x = 18,959,009,439.54 × 4,672,761,899.72
  4. Step 4: Simplify right side
    12,638,505,067.16x = 88,590,936,965,514,346,496
  5. Step 5: Solve for x
    x = 88,590,936,965,514,346,496/12,638,505,067.16
  6. Step 6: Final answer
    x = 7,009,605,684.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.