Home / 1,395,788.88-1,926,035.64-783,817.68

Finding the Fourth Proportional to 1,395,788.88, 1,926,035.64 and 783,817.68

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Solution

The fourth proportional to 1,395,788.88, 1,926,035.64 and 783,817.68 is: 1,081,582.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,788.88 : 1,926,035.64 = 783,817.68 : x
  2. Step 2: Convert to fraction form
    1,395,788.88/1,926,035.64 = 783,817.68/x
  3. Step 3: Cross multiply
    1,395,788.88x = 1,926,035.64 × 783,817.68
  4. Step 4: Simplify right side
    1,395,788.88x = 1,509,660,786,942.12
  5. Step 5: Solve for x
    x = 1,509,660,786,942.12/1,395,788.88
  6. Step 6: Final answer
    x = 1,081,582.47

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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.