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Finding the Fourth Proportional to 1,322,788.56, 1,825,510.68 and 749,839.92

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Solution

The fourth proportional to 1,322,788.56, 1,825,510.68 and 749,839.92 is: 1,034,814.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,788.56 : 1,825,510.68 = 749,839.92 : x
  2. Step 2: Convert to fraction form
    1,322,788.56/1,825,510.68 = 749,839.92/x
  3. Step 3: Cross multiply
    1,322,788.56x = 1,825,510.68 × 749,839.92
  4. Step 4: Simplify right side
    1,322,788.56x = 1,368,840,782,250.35
  5. Step 5: Solve for x
    x = 1,368,840,782,250.35/1,322,788.56
  6. Step 6: Final answer
    x = 1,034,814.50

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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.