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Finding the Fourth Proportional to 12,775,305.64, 19,165,978.68 and 4,139,391.64

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Solution

The fourth proportional to 12,775,305.64, 19,165,978.68 and 4,139,391.64 is: 6,210,066.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775,305.64 : 19,165,978.68 = 4,139,391.64 : x
  2. Step 2: Convert to fraction form
    12,775,305.64/19,165,978.68 = 4,139,391.64/x
  3. Step 3: Cross multiply
    12,775,305.64x = 19,165,978.68 × 4,139,391.64
  4. Step 4: Simplify right side
    12,775,305.64x = 79,335,491,920,410.23
  5. Step 5: Solve for x
    x = 79,335,491,920,410.23/12,775,305.64
  6. Step 6: Final answer
    x = 6,210,066.06

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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.