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Finding the Fourth Proportional to 1,951,312.82, 2,926,969.26 and 1,286,309.30

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Solution

The fourth proportional to 1,951,312.82, 2,926,969.26 and 1,286,309.30 is: 1,929,463.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951,312.82 : 2,926,969.26 = 1,286,309.30 : x
  2. Step 2: Convert to fraction form
    1,951,312.82/2,926,969.26 = 1,286,309.30/x
  3. Step 3: Cross multiply
    1,951,312.82x = 2,926,969.26 × 1,286,309.30
  4. Step 4: Simplify right side
    1,951,312.82x = 3,764,987,779,952.12
  5. Step 5: Solve for x
    x = 3,764,987,779,952.12/1,951,312.82
  6. Step 6: Final answer
    x = 1,929,463.97

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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.