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Finding the Fourth Proportional to 1,278,965.26, 1,764,972.39 and 706,005.82

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Solution

The fourth proportional to 1,278,965.26, 1,764,972.39 and 706,005.82 is: 974,288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,965.26 : 1,764,972.39 = 706,005.82 : x
  2. Step 2: Convert to fraction form
    1,278,965.26/1,764,972.39 = 706,005.82/x
  3. Step 3: Cross multiply
    1,278,965.26x = 1,764,972.39 × 706,005.82
  4. Step 4: Simplify right side
    1,278,965.26x = 1,246,080,779,479.31
  5. Step 5: Solve for x
    x = 1,246,080,779,479.31/1,278,965.26
  6. Step 6: Final answer
    x = 974,288.21

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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.